diff --git a/Content.Client/ClickMapManager.cs b/Content.Client/ClickMapManager.cs
index a9938f05c8..36d5382157 100644
--- a/Content.Client/ClickMapManager.cs
+++ b/Content.Client/ClickMapManager.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using System;
 using System.Collections.Generic;
 using System.Text;
@@ -11,8 +12,6 @@ using Robust.Shared.ViewVariables;
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.PixelFormats;
 
-#nullable enable
-
 namespace Content.Client
 {
     internal class ClickMapManager : IClickMapManager, IPostInjectInit
diff --git a/Content.Client/GameObjects/Components/ClickableComponent.cs b/Content.Client/GameObjects/Components/ClickableComponent.cs
index 3b36e8d38a..57d9420167 100644
--- a/Content.Client/GameObjects/Components/ClickableComponent.cs
+++ b/Content.Client/GameObjects/Components/ClickableComponent.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using System;
 using Robust.Client.Graphics.ClientEye;
 using Robust.Client.Interfaces.GameObjects.Components;
@@ -8,8 +9,6 @@ using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.Components
 {
     [RegisterComponent]
diff --git a/Content.Client/GameObjects/Components/Instruments/InstrumentComponent.cs b/Content.Client/GameObjects/Components/Instruments/InstrumentComponent.cs
index 2791aa7ddb..69d364fd5f 100644
--- a/Content.Client/GameObjects/Components/Instruments/InstrumentComponent.cs
+++ b/Content.Client/GameObjects/Components/Instruments/InstrumentComponent.cs
@@ -1,24 +1,17 @@
+#nullable enable
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
 using Content.Shared.GameObjects.Components.Instruments;
 using Content.Shared.Physics;
-using JetBrains.Annotations;
-using NFluidsynth;
 using Robust.Shared.GameObjects;
 using Robust.Client.Audio.Midi;
-using Robust.Client.Player;
-using Robust.Shared.Interfaces.Log;
 using Robust.Shared.Interfaces.Network;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
-using Robust.Shared.Log;
 using Robust.Shared.Players;
 using Robust.Shared.Serialization;
-using Robust.Shared.Timing;
 using Robust.Shared.ViewVariables;
-using Logger = Robust.Shared.Log.Logger;
 using MidiEvent = Robust.Shared.Audio.Midi.MidiEvent;
 using Timer = Robust.Shared.Timers.Timer;
 
@@ -32,24 +25,23 @@ namespace Content.Client.GameObjects.Components.Instruments
         /// <summary>
         ///     Called when a midi song stops playing.
         /// </summary>
-        public event Action OnMidiPlaybackEnded;
+        public event Action? OnMidiPlaybackEnded;
 
 #pragma warning disable 649
-        [Dependency] private readonly IMidiManager _midiManager;
+        [Dependency] private readonly IMidiManager _midiManager = default!;
 
-        [Dependency] private readonly IGameTiming _gameTiming;
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
 
-        [Dependency] private readonly IClientNetManager _netManager;
+        [Dependency] private readonly IClientNetManager _netManager = default!;
 #pragma warning restore 649
 
-        [CanBeNull]
-        private IMidiRenderer _renderer;
+        private IMidiRenderer? _renderer;
 
         private byte _instrumentProgram = 1;
 
-        private byte _instrumentBank = 0;
+        private byte _instrumentBank;
 
-        private uint _sequenceDelay = 0;
+        private uint _sequenceDelay;
 
         private uint _sequenceStartTick;
 
@@ -209,7 +201,7 @@ namespace Content.Client.GameObjects.Components.Instruments
             serializer.DataField(ref _instrumentBank, "bank", (byte) 0);
         }
 
-        public override void HandleNetworkMessage(ComponentMessage message, INetChannel channel, ICommonSession session = null)
+        public override void HandleNetworkMessage(ComponentMessage message, INetChannel channel, ICommonSession? session = null)
         {
             base.HandleNetworkMessage(message, channel, session);
 
@@ -240,7 +232,7 @@ namespace Content.Client.GameObjects.Components.Instruments
                             .Min(x => x.Tick) - 1;
                     }
 
-                    var sqrtLag = MathF.Sqrt(_netManager.ServerChannel.Ping / 1000f);
+                    var sqrtLag = MathF.Sqrt(_netManager.ServerChannel!.Ping / 1000f);
                     var delay = (uint) (_renderer!.SequencerTimeScale * (.2 + sqrtLag));
                     var delta = delay - _sequenceStartTick;
 
@@ -265,12 +257,12 @@ namespace Content.Client.GameObjects.Components.Instruments
                     }
 
                     break;
-                case InstrumentStartMidiMessage startMidiMessage:
+                case InstrumentStartMidiMessage _:
                 {
                     SetupRenderer(true);
                     break;
                 }
-                case InstrumentStopMidiMessage stopMidiMessage:
+                case InstrumentStopMidiMessage _:
                 {
                     EndRenderer(true);
                     break;
@@ -278,7 +270,7 @@ namespace Content.Client.GameObjects.Components.Instruments
             }
         }
 
-        public override void HandleComponentState(ComponentState curState, ComponentState nextState)
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
         {
             base.HandleComponentState(curState, nextState);
             if (!(curState is InstrumentState state)) return;
@@ -370,7 +362,7 @@ namespace Content.Client.GameObjects.Components.Instruments
 
         private TimeSpan _lastMeasured = TimeSpan.MinValue;
 
-        private int _sentWithinASec = 0;
+        private int _sentWithinASec;
 
         private static readonly TimeSpan OneSecAgo = TimeSpan.FromSeconds(-1);
 
diff --git a/Content.Client/GameObjects/Components/Mobs/StatusControl.cs b/Content.Client/GameObjects/Components/Mobs/StatusControl.cs
index 591bf9e1c9..7df0225a90 100644
--- a/Content.Client/GameObjects/Components/Mobs/StatusControl.cs
+++ b/Content.Client/GameObjects/Components/Mobs/StatusControl.cs
@@ -1,5 +1,5 @@
-using Content.Shared.GameObjects.Components.Mobs;
-using JetBrains.Annotations;
+#nullable enable
+using Content.Shared.GameObjects.Components.Mobs;
 using Robust.Client.Graphics;
 using Robust.Client.UserInterface.Controls;
 
@@ -9,7 +9,7 @@ namespace Content.Client.GameObjects.Components.Mobs
     {
         public readonly StatusEffect Effect;
 
-        public StatusControl(StatusEffect effect, [CanBeNull] Texture texture)
+        public StatusControl(StatusEffect effect, Texture? texture)
         {
             Effect = effect;
 
diff --git a/Content.Client/GameObjects/Components/Mobs/StunnableComponent.cs b/Content.Client/GameObjects/Components/Mobs/StunnableComponent.cs
index 7ff78391ca..7c01000dd4 100644
--- a/Content.Client/GameObjects/Components/Mobs/StunnableComponent.cs
+++ b/Content.Client/GameObjects/Components/Mobs/StunnableComponent.cs
@@ -1,9 +1,8 @@
+#nullable enable
 using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.GameObjects.Components.Movement;
 using Robust.Shared.GameObjects;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.Components.Mobs
 {
     [RegisterComponent]
diff --git a/Content.Client/GameObjects/Components/Movement/PlayerInputMoverComponent.cs b/Content.Client/GameObjects/Components/Movement/PlayerInputMoverComponent.cs
index 50bcbd2790..fcdde82ef8 100644
--- a/Content.Client/GameObjects/Components/Movement/PlayerInputMoverComponent.cs
+++ b/Content.Client/GameObjects/Components/Movement/PlayerInputMoverComponent.cs
@@ -1,14 +1,13 @@
+#nullable enable
 using Content.Shared.GameObjects.Components.Movement;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.Components.Movement
 {
     [RegisterComponent]
     [ComponentReference(typeof(IMoverComponent))]
-    public class PlayerInputMoverComponent : SharedPlayerInputMoverComponent, IMoverComponent
+    public class PlayerInputMoverComponent : SharedPlayerInputMoverComponent
     {
         public override GridCoordinates LastPosition { get; set; }
         public override float StepSoundDistance { get; set; }
diff --git a/Content.Client/GameObjects/Components/Nutrition/HungerComponent.cs b/Content.Client/GameObjects/Components/Nutrition/HungerComponent.cs
index fa66e98812..8323fb5e7a 100644
--- a/Content.Client/GameObjects/Components/Nutrition/HungerComponent.cs
+++ b/Content.Client/GameObjects/Components/Nutrition/HungerComponent.cs
@@ -1,9 +1,8 @@
+#nullable enable
 using Content.Shared.GameObjects.Components.Movement;
 using Content.Shared.GameObjects.Components.Nutrition;
 using Robust.Shared.GameObjects;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.Components.Nutrition
 {
     [RegisterComponent]
diff --git a/Content.Client/GameObjects/Components/Nutrition/ThirstComponent.cs b/Content.Client/GameObjects/Components/Nutrition/ThirstComponent.cs
index 10b63d054b..b77d59a34a 100644
--- a/Content.Client/GameObjects/Components/Nutrition/ThirstComponent.cs
+++ b/Content.Client/GameObjects/Components/Nutrition/ThirstComponent.cs
@@ -1,9 +1,8 @@
+#nullable enable
 using Content.Shared.GameObjects.Components.Movement;
 using Content.Shared.GameObjects.Components.Nutrition;
 using Robust.Shared.GameObjects;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.Components.Nutrition
 {
     [RegisterComponent]
diff --git a/Content.Client/GameObjects/Components/Projectiles/ProjectileComponent.cs b/Content.Client/GameObjects/Components/Projectiles/ProjectileComponent.cs
index 27e8ed6285..9abf4a557b 100644
--- a/Content.Client/GameObjects/Components/Projectiles/ProjectileComponent.cs
+++ b/Content.Client/GameObjects/Components/Projectiles/ProjectileComponent.cs
@@ -1,8 +1,7 @@
+#nullable enable
 using Content.Shared.GameObjects.Components.Projectiles;
 using Robust.Shared.GameObjects;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.Components.Projectiles
 {
     [RegisterComponent]
diff --git a/Content.Client/GameObjects/EntitySystems/MoverSystem.cs b/Content.Client/GameObjects/EntitySystems/MoverSystem.cs
index 37689e355c..84fe87bf25 100644
--- a/Content.Client/GameObjects/EntitySystems/MoverSystem.cs
+++ b/Content.Client/GameObjects/EntitySystems/MoverSystem.cs
@@ -1,4 +1,5 @@
-using Content.Shared.GameObjects.Components.Movement;
+#nullable enable
+using Content.Shared.GameObjects.Components.Movement;
 using Content.Shared.GameObjects.EntitySystems;
 using Content.Shared.Physics;
 using JetBrains.Annotations;
@@ -7,8 +8,6 @@ using Robust.Client.Player;
 using Robust.Shared.GameObjects.Components;
 using Robust.Shared.IoC;
 
-#nullable enable
-
 namespace Content.Client.GameObjects.EntitySystems
 {
     [UsedImplicitly]
diff --git a/Content.Client/UserInterface/CreditsWindow.cs b/Content.Client/UserInterface/CreditsWindow.cs
index 56ac89f153..1bdd4c7a76 100644
--- a/Content.Client/UserInterface/CreditsWindow.cs
+++ b/Content.Client/UserInterface/CreditsWindow.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -13,8 +14,6 @@ using Robust.Shared.Localization;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
 
-#nullable enable
-
 namespace Content.Client.UserInterface
 {
     public sealed class CreditsWindow : SS14Window
diff --git a/Content.IntegrationTests/Tests/Networking/SimplePredictReconcileTest.cs b/Content.IntegrationTests/Tests/Networking/SimplePredictReconcileTest.cs
index 794dfb0fe6..93d2db7549 100644
--- a/Content.IntegrationTests/Tests/Networking/SimplePredictReconcileTest.cs
+++ b/Content.IntegrationTests/Tests/Networking/SimplePredictReconcileTest.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
@@ -15,8 +16,6 @@ using Robust.Shared.IoC;
 using Robust.Shared.Map;
 using Robust.Shared.Timing;
 
-#nullable enable
-
 namespace Content.IntegrationTests.Tests.Networking
 {
     // This test checks that the prediction & reconciling system is working correctly with a simple boolean flag.
diff --git a/Content.Server/GameObjects/Components/Access/AccessComponent.cs b/Content.Server/GameObjects/Components/Access/AccessComponent.cs
index 060f418634..101f215c15 100644
--- a/Content.Server/GameObjects/Components/Access/AccessComponent.cs
+++ b/Content.Server/GameObjects/Components/Access/AccessComponent.cs
@@ -1,11 +1,10 @@
+#nullable enable
 using System.Collections.Generic;
 using Content.Server.Interfaces;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
-#nullable enable
-
 namespace Content.Server.GameObjects.Components.Access
 {
     /// <summary>
diff --git a/Content.Server/GameObjects/Components/Access/AccessReaderComponent.cs b/Content.Server/GameObjects/Components/Access/AccessReaderComponent.cs
index 2a1d18ac41..94f06bc4a2 100644
--- a/Content.Server/GameObjects/Components/Access/AccessReaderComponent.cs
+++ b/Content.Server/GameObjects/Components/Access/AccessReaderComponent.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -10,8 +11,6 @@ using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
-#nullable enable
-
 namespace Content.Server.GameObjects.Components.Access
 {
     /// <summary>
@@ -68,7 +67,6 @@ namespace Content.Server.GameObjects.Components.Access
             return _accessLists.Count == 0 || _accessLists.Any(a => a.IsSubsetOf(accessTags));
         }
 
-        [CanBeNull]
         public static ICollection<string> FindAccessTags(IEntity entity)
         {
             if (entity.TryGetComponent(out IAccess accessComponent))
diff --git a/Content.Server/GameObjects/Components/Access/PresetIdCardComponent.cs b/Content.Server/GameObjects/Components/Access/PresetIdCardComponent.cs
index 3895218154..67c6d08a76 100644
--- a/Content.Server/GameObjects/Components/Access/PresetIdCardComponent.cs
+++ b/Content.Server/GameObjects/Components/Access/PresetIdCardComponent.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using Content.Shared.Jobs;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.GameObjects;
@@ -5,8 +6,6 @@ using Robust.Shared.IoC;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization;
 
-#nullable enable
-
 namespace Content.Server.GameObjects.Components.Access
 {
     [RegisterComponent]
diff --git a/Content.Server/GameObjects/Components/Cargo/CargoConsoleComponent.cs b/Content.Server/GameObjects/Components/Cargo/CargoConsoleComponent.cs
index cd5effccc2..78c30dc9b4 100644
--- a/Content.Server/GameObjects/Components/Cargo/CargoConsoleComponent.cs
+++ b/Content.Server/GameObjects/Components/Cargo/CargoConsoleComponent.cs
@@ -1,10 +1,10 @@
-using Content.Server.Cargo;
+#nullable enable
+using Content.Server.Cargo;
 using Content.Server.GameObjects.Components.Power.ApcNetComponents;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces.GameObjects.Components.Interaction;
 using Content.Shared.GameObjects.Components.Cargo;
 using Content.Shared.Prototypes.Cargo;
-using JetBrains.Annotations;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Shared.GameObjects;
@@ -20,39 +20,43 @@ namespace Content.Server.GameObjects.Components.Cargo
     public class CargoConsoleComponent : SharedCargoConsoleComponent, IActivate
     {
 #pragma warning disable 649
-        [Dependency] private readonly ICargoOrderDataManager _cargoOrderDataManager;
+        [Dependency] private readonly ICargoOrderDataManager _cargoOrderDataManager = default!;
 #pragma warning restore 649
 
         [ViewVariables]
         public int Points = 1000;
 
-        private BoundUserInterface _userInterface;
+        private BoundUserInterface _userInterface  = default!;
 
         [ViewVariables]
-        public GalacticMarketComponent Market { get; private set; }
-        [ViewVariables]
-        public CargoOrderDatabaseComponent Orders { get; private set; }
-
-        private CargoBankAccount _bankAccount;
+        public GalacticMarketComponent Market { get; private set; } = default!;
 
         [ViewVariables]
-        [CanBeNull]
-        public CargoBankAccount BankAccount
+        public CargoOrderDatabaseComponent Orders { get; private set; } = default!;
+
+        private CargoBankAccount? _bankAccount;
+
+        [ViewVariables]
+        public CargoBankAccount? BankAccount
         {
             get => _bankAccount;
             private set
             {
                 if (_bankAccount == value)
+                {
                     return;
+                }
+
                 if (_bankAccount != null)
                 {
                     _bankAccount.OnBalanceChange -= UpdateUIState;
                 }
 
                 _bankAccount = value;
+
                 if (value != null)
                 {
-                    _bankAccount.OnBalanceChange += UpdateUIState;
+                    value.OnBalanceChange += UpdateUIState;
                 }
 
                 UpdateUIState();
@@ -61,9 +65,9 @@ namespace Content.Server.GameObjects.Components.Cargo
 
         private bool _requestOnly = false;
 
-        private PowerReceiverComponent _powerReceiver;
+        private PowerReceiverComponent _powerReceiver = default!;
         private bool Powered => _powerReceiver.Powered;
-        private CargoConsoleSystem _cargoConsoleSystem;
+        private CargoConsoleSystem _cargoConsoleSystem = default!;
 
         public override void Initialize()
         {
@@ -98,8 +102,11 @@ namespace Content.Server.GameObjects.Components.Cargo
             {
                 case CargoConsoleAddOrderMessage msg:
                 {
-                    if (msg.Amount <= 0)
+                    if (msg.Amount <= 0 || _bankAccount == null)
+                    {
                         break;
+                    }
+
                     _cargoOrderDataManager.AddOrder(Orders.Database.Id, msg.Requester, msg.Reason, msg.ProductId, msg.Amount, _bankAccount.Id);
                     break;
                 }
@@ -111,8 +118,12 @@ namespace Content.Server.GameObjects.Components.Cargo
                 case CargoConsoleApproveOrderMessage msg:
                 {
                     if (_requestOnly ||
-                        !Orders.Database.TryGetOrder(msg.OrderNumber, out var order))
+                        !Orders.Database.TryGetOrder(msg.OrderNumber, out var order) ||
+                        _bankAccount == null)
+                    {
                         break;
+                    }
+
                     _prototypeManager.TryIndex(order.ProductId, out CargoProductPrototype product);
                     if (product == null)
                         break;
diff --git a/Content.Server/GameObjects/Components/Mobs/BuckleComponent.cs b/Content.Server/GameObjects/Components/Mobs/BuckleComponent.cs
index 485624b5de..509baf88b1 100644
--- a/Content.Server/GameObjects/Components/Mobs/BuckleComponent.cs
+++ b/Content.Server/GameObjects/Components/Mobs/BuckleComponent.cs
@@ -1,4 +1,5 @@
-using Content.Server.GameObjects.Components.Strap;
+#nullable enable
+using Content.Server.GameObjects.Components.Strap;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Interaction;
@@ -8,7 +9,6 @@ using Content.Shared.GameObjects;
 using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.GameObjects.Components.Strap;
 using Content.Shared.GameObjects.EntitySystems;
-using JetBrains.Annotations;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
@@ -25,15 +25,15 @@ namespace Content.Server.GameObjects.Components.Mobs
     public class BuckleComponent : SharedBuckleComponent, IInteractHand, IDragDrop
     {
 #pragma warning disable 649
-        [Dependency] private readonly IEntitySystemManager _entitySystem;
-        [Dependency] private readonly IServerNotifyManager _notifyManager;
+        [Dependency] private readonly IEntitySystemManager _entitySystem = default!;
+        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
 #pragma warning restore 649
 
-        [CanBeNull] private StrapComponent _buckledTo;
+        private StrapComponent? _buckledTo;
         private int _size;
 
-        [ViewVariables, CanBeNull]
-        public StrapComponent BuckledTo
+        [ViewVariables]
+        public StrapComponent? BuckledTo
         {
             get => _buckledTo;
             private set
diff --git a/Content.Server/GameObjects/Components/Movement/PlayerInputMoverComponent.cs b/Content.Server/GameObjects/Components/Movement/PlayerInputMoverComponent.cs
index e1e617774e..d3ba8882db 100644
--- a/Content.Server/GameObjects/Components/Movement/PlayerInputMoverComponent.cs
+++ b/Content.Server/GameObjects/Components/Movement/PlayerInputMoverComponent.cs
@@ -1,11 +1,7 @@
-using Content.Shared.GameObjects.Components.Movement;
+#nullable enable
+using Content.Shared.GameObjects.Components.Movement;
 using Robust.Shared.GameObjects;
-using Robust.Shared.GameObjects.Components;
 using Robust.Shared.Map;
-using Robust.Shared.Physics;
-using Robust.Shared.ViewVariables;
-
-#nullable enable
 
 namespace Content.Server.GameObjects.Components.Movement
 {
diff --git a/Content.Server/GameObjects/Components/PDA/PDAComponent.cs b/Content.Server/GameObjects/Components/PDA/PDAComponent.cs
index e4a02108e5..c14cce399f 100644
--- a/Content.Server/GameObjects/Components/PDA/PDAComponent.cs
+++ b/Content.Server/GameObjects/Components/PDA/PDAComponent.cs
@@ -1,3 +1,4 @@
+#nullable enable
 using System;
 using System.Collections;
 using System.Collections.Generic;
@@ -22,8 +23,6 @@ using Robust.Shared.Localization;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
-#nullable enable
-
 namespace Content.Server.GameObjects.Components.PDA
 {
     [RegisterComponent]
diff --git a/Content.Server/GameObjects/Components/WiresComponent.cs b/Content.Server/GameObjects/Components/WiresComponent.cs
index 2c8534edd6..8af306e51e 100644
--- a/Content.Server/GameObjects/Components/WiresComponent.cs
+++ b/Content.Server/GameObjects/Components/WiresComponent.cs
@@ -1,4 +1,5 @@
-using System;
+#nullable enable
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Content.Server.GameObjects.Components.Interactable;
@@ -32,12 +33,12 @@ namespace Content.Server.GameObjects.Components
     public class WiresComponent : SharedWiresComponent, IInteractUsing, IExamine, IMapInit
     {
 #pragma warning disable 649
-        [Dependency] private readonly IRobustRandom _random;
-        [Dependency] private readonly IServerNotifyManager _notifyManager;
+        [Dependency] private readonly IRobustRandom _random = default!;
+        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
 #pragma warning restore 649
-        private AudioSystem _audioSystem;
-        private AppearanceComponent _appearance;
-        private BoundUserInterface _userInterface;
+        private AudioSystem _audioSystem = default!;
+        private AppearanceComponent _appearance = default!;
+        private BoundUserInterface _userInterface = default!;
 
         private bool _isPanelOpen;
 
@@ -93,7 +94,7 @@ namespace Content.Server.GameObjects.Components
         }
 
         [ViewVariables(VVAccess.ReadWrite)]
-        public string SerialNumber
+        public string? SerialNumber
         {
             get => _serialNumber;
             set
@@ -127,16 +128,16 @@ namespace Content.Server.GameObjects.Components
         private readonly List<WireLetter> _availableLetters =
             new List<WireLetter>((WireLetter[]) Enum.GetValues(typeof(WireLetter)));
 
-        private string _boardName;
+        private string _boardName = default!;
 
-        private string _serialNumber;
+        private string? _serialNumber;
 
         // Used to generate wire appearance randomization client side.
         // We honestly don't care what it is or such but do care that it doesn't change between UI re-opens.
         [ViewVariables]
         private int _wireSeed;
         [ViewVariables]
-        private string _layoutId;
+        private string? _layoutId;
 
         public override void Initialize()
         {
@@ -186,7 +187,7 @@ namespace Content.Server.GameObjects.Components
             base.Startup();
 
 
-            WireLayout layout = null;
+            WireLayout? layout = null;
             var hackingSystem = EntitySystem.Get<WireHackingSystem>();
             if (_layoutId != null)
             {
@@ -299,9 +300,9 @@ namespace Content.Server.GameObjects.Components
         {
             [NotNull] private readonly WiresComponent _wires;
             [NotNull] private readonly IWires _owner;
-            [CanBeNull] private readonly WireLayout _layout;
+            private readonly WireLayout? _layout;
 
-            public WiresBuilder(WiresComponent wires, IWires owner, WireLayout layout)
+            public WiresBuilder(WiresComponent wires, IWires owner, WireLayout? layout)
             {
                 _wires = wires;
                 _owner = owner;
@@ -365,12 +366,12 @@ namespace Content.Server.GameObjects.Components
             {
                 case WiresActionMessage msg:
                     var wire = WiresList.Find(x => x.Id == msg.Id);
-                    if (wire == null)
+                    var player = serverMsg.Session.AttachedEntity;
+                    if (wire == null || player == null)
                     {
                         return;
                     }
 
-                    var player = serverMsg.Session.AttachedEntity;
                     if (!player.TryGetComponent(out IHandsComponent handsComponent))
                     {
                         _notifyManager.PopupMessage(Owner.Transform.GridPosition, player,
@@ -386,7 +387,7 @@ namespace Content.Server.GameObjects.Components
                     }
 
                     var activeHandEntity = handsComponent.GetActiveHand?.Owner;
-                    ToolComponent tool = null;
+                    ToolComponent? tool = null;
                     activeHandEntity?.TryGetComponent(out tool);
 
                     switch (msg.Action)
diff --git a/Content.Server/GameObjects/EntitySystems/MoverSystem.cs b/Content.Server/GameObjects/EntitySystems/MoverSystem.cs
index 626e86a18e..bb1d181930 100644
--- a/Content.Server/GameObjects/EntitySystems/MoverSystem.cs
+++ b/Content.Server/GameObjects/EntitySystems/MoverSystem.cs
@@ -1,4 +1,5 @@
-using Content.Server.GameObjects;
+#nullable enable
+using Content.Server.GameObjects;
 using Content.Server.GameObjects.Components;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Movement;
@@ -23,8 +24,6 @@ using Robust.Shared.Map;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
 
-#nullable enable
-
 namespace Content.Server.GameObjects.EntitySystems
 {
     [UsedImplicitly]
diff --git a/Content.Server/Interfaces/IAccess.cs b/Content.Server/Interfaces/IAccess.cs
index f50cae8214..f271990545 100644
--- a/Content.Server/Interfaces/IAccess.cs
+++ b/Content.Server/Interfaces/IAccess.cs
@@ -1,9 +1,8 @@
+#nullable enable
 using System;
 using Content.Server.GameObjects.Components.Access;
 using System.Collections.Generic;
 
-#nullable enable
-
 namespace Content.Server.Interfaces
 {
     /// <summary>
diff --git a/Content.Shared/GameObjects/Components/Movement/SharedPlayerInputMoverComponent.cs b/Content.Shared/GameObjects/Components/Movement/SharedPlayerInputMoverComponent.cs
index cb47ac544c..edd3e03d37 100644
--- a/Content.Shared/GameObjects/Components/Movement/SharedPlayerInputMoverComponent.cs
+++ b/Content.Shared/GameObjects/Components/Movement/SharedPlayerInputMoverComponent.cs
@@ -1,4 +1,5 @@
-using System;
+#nullable enable
+using System;
 using Content.Shared.GameObjects.Components.Mobs;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Components;
@@ -13,8 +14,6 @@ using Robust.Shared.Serialization;
 using Robust.Shared.Timing;
 using Robust.Shared.ViewVariables;
 
-#nullable enable
-
 namespace Content.Shared.GameObjects.Components.Movement
 {
     public abstract class SharedPlayerInputMoverComponent : Component, IMoverComponent, ICollideSpecial
diff --git a/Content.Shared/GameObjects/EntitySystems/SharedMoverSystem.cs b/Content.Shared/GameObjects/EntitySystems/SharedMoverSystem.cs
index 931648c5f1..29b65486a1 100644
--- a/Content.Shared/GameObjects/EntitySystems/SharedMoverSystem.cs
+++ b/Content.Shared/GameObjects/EntitySystems/SharedMoverSystem.cs
@@ -1,4 +1,5 @@
-using System.Diagnostics.CodeAnalysis;
+#nullable enable
+using System.Diagnostics.CodeAnalysis;
 using Content.Shared.GameObjects.Components.Movement;
 using Content.Shared.Physics;
 using Robust.Shared.Configuration;
@@ -15,8 +16,6 @@ using Robust.Shared.IoC;
 using Robust.Shared.Maths;
 using Robust.Shared.Players;
 
-#nullable enable
-
 namespace Content.Shared.GameObjects.EntitySystems
 {
     public abstract class SharedMoverSystem : EntitySystem
diff --git a/SpaceStation14.sln.DotSettings b/SpaceStation14.sln.DotSettings
index 4eed2c94d7..5d7127034d 100644
--- a/SpaceStation14.sln.DotSettings
+++ b/SpaceStation14.sln.DotSettings
@@ -1,4 +1,6 @@
 <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:Boolean x:Key="/Default/CodeEditing/TypingAssist/CSharpAnnotationTypingAssist/IsEnabledAfterTypeName/@EntryValue">False</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeEditing/TypingAssist/CSharpAnnotationTypingAssist/IsEnabledAtOtherPositions/@EntryValue">False</s:Boolean>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=EnforceDoWhileStatementBraces/@EntryIndexedValue">WARNING</s:String>
     <s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=EnforceFixedStatementBraces/@EntryIndexedValue">WARNING</s:String>
     <s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=EnforceForeachStatementBraces/@EntryIndexedValue">WARNING</s:String>