diff --git a/.idea/.idea.pac-man-board-game/.idea/codeStyles/codeStyleConfig.xml b/.idea/.idea.pac-man-board-game/.idea/codeStyles/codeStyleConfig.xml
index 79ee123..6e6eec1 100644
--- a/.idea/.idea.pac-man-board-game/.idea/codeStyles/codeStyleConfig.xml
+++ b/.idea/.idea.pac-man-board-game/.idea/codeStyles/codeStyleConfig.xml
@@ -1,5 +1,6 @@
 <component name="ProjectCodeStyleConfiguration">
   <state>
     <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
   </state>
 </component>
\ No newline at end of file
diff --git a/BackendTests/BackendTests.csproj b/BackendTests/BackendTests.csproj
index 98fa5fa..70244b5 100644
--- a/BackendTests/BackendTests.csproj
+++ b/BackendTests/BackendTests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
 
@@ -13,7 +13,7 @@
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
         <PackageReference Include="NSubstitute" Version="5.1.0"/>
-        <PackageReference Include="NUnit" Version="4.0.1" />
+        <PackageReference Include="NUnit" Version="4.0.1"/>
         <PackageReference Include="NUnit3TestAdapter" Version="4.5.0"/>
         <PackageReference Include="NUnit.Analyzers" Version="3.10.0">
             <PrivateAssets>all</PrivateAssets>
diff --git a/BackendTests/Services/ActionServiceTests.cs b/BackendTests/Services/ActionServiceTests.cs
index 258fe95..2bfb42d 100644
--- a/BackendTests/Services/ActionServiceTests.cs
+++ b/BackendTests/Services/ActionServiceTests.cs
@@ -10,8 +10,7 @@ using pacMan.Services;
 
 namespace BackendTests.Services;
 
-[TestFixture]
-[TestOf(nameof(ActionService))]
+[TestFixture, TestOf(nameof(ActionService))]
 public class ActionServiceTests
 {
     [SetUp]
@@ -157,7 +156,7 @@ public class ActionServiceTests
     public void FindNextPlayer_NoPlayers()
     {
         _service.Game = new pacMan.Services.Game(new Queue<DirectionalPosition>());
-        Assert.Throws<InvalidOperationException>(() => _service.FindNextPlayer());
+        Assert.Throws<PlayerNotFoundException>(() => _service.FindNextPlayer());
     }
 
     [Test]
diff --git a/BackendTests/Services/GameTests.cs b/BackendTests/Services/GameTests.cs
index 444dc4f..41f5ff8 100644
--- a/BackendTests/Services/GameTests.cs
+++ b/BackendTests/Services/GameTests.cs
@@ -6,8 +6,7 @@ using pacMan.Utils;
 
 namespace BackendTests.Services;
 
-[TestFixture]
-[TestOf(nameof(pacMan.Services.Game))]
+[TestFixture, TestOf(nameof(pacMan.Services.Game))]
 public class GameTests
 {
     [SetUp]
@@ -56,7 +55,7 @@ public class GameTests
     [Test]
     public void NextPlayer_WhenEmpty()
     {
-        Assert.Throws<InvalidOperationException>(() => _game.NextPlayer());
+        Assert.Throws<PlayerNotFoundException>(() => _game.NextPlayer());
     }
 
     [Test]
diff --git a/DataAccessLayer/DataAccessLayer.csproj b/DataAccessLayer/DataAccessLayer.csproj
index dd09258..76ba19a 100644
--- a/DataAccessLayer/DataAccessLayer.csproj
+++ b/DataAccessLayer/DataAccessLayer.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <RootNamespace>DAL</RootNamespace>
diff --git a/pac-man-board-game/DTOs/DTO.cs b/pac-man-board-game/DTOs/DTO.cs
index 8cb82f8..1316faf 100644
--- a/pac-man-board-game/DTOs/DTO.cs
+++ b/pac-man-board-game/DTOs/DTO.cs
@@ -5,11 +5,9 @@ using pacMan.GameStuff.Items;
 namespace pacMan.DTOs;
 
 public readonly record struct JoinGameData(
-    [property: JsonInclude]
-    [property: JsonPropertyName("username")]
+    [property: JsonInclude, JsonPropertyName("username"), JsonRequired]
     string Username,
-    [property: JsonInclude]
-    [property: JsonPropertyName("gameId")]
+    [property: JsonInclude, JsonPropertyName("gameId"), JsonRequired]
     Guid GameId
 )
 {
@@ -17,34 +15,26 @@ public readonly record struct JoinGameData(
 }
 
 public readonly record struct CreateGameData(
-    [property: JsonInclude]
-    [property: JsonPropertyName("player")]
+    [property: JsonInclude, JsonPropertyName("player"), JsonRequired]
     Player Player,
-    [property: JsonInclude]
-    [property: JsonPropertyName("spawns")]
+    [property: JsonInclude, JsonPropertyName("spawns"), JsonRequired]
     Queue<DirectionalPosition> Spawns
 );
 
 public readonly record struct ReadyData(
-    [property: JsonInclude]
-    [property: JsonPropertyName("allReady")]
+    [property: JsonInclude, JsonPropertyName("allReady"), JsonRequired]
     bool AllReady,
-    [property: JsonInclude]
-    [property: JsonPropertyName("players")]
+    [property: JsonInclude, JsonPropertyName("players"), JsonRequired]
     IEnumerable<Player> Players
 );
 
 public readonly record struct MovePlayerData(
-    [property: JsonInclude]
-    [property: JsonPropertyName("players")]
+    [property: JsonInclude, JsonPropertyName("players"), JsonRequired]
     List<Player> Players,
-    [property: JsonInclude]
-    [property: JsonPropertyName("ghosts")]
+    [property: JsonInclude, JsonPropertyName("ghosts"), JsonRequired]
     List<Character> Ghosts,
-    [property: JsonInclude]
-    [property: JsonPropertyName("dice")]
+    [property: JsonInclude, JsonPropertyName("dice"), JsonRequired]
     List<int> Dice,
-    [property: JsonInclude]
-    [property: JsonPropertyName("eatenPellets")]
+    [property: JsonInclude, JsonPropertyName("eatenPellets"), JsonRequired]
     List<Position> EatenPellets
 );
diff --git a/pac-man-board-game/Services/ActionService.cs b/pac-man-board-game/Services/ActionService.cs
index 9a3d193..0fd2172 100644
--- a/pac-man-board-game/Services/ActionService.cs
+++ b/pac-man-board-game/Services/ActionService.cs
@@ -24,7 +24,7 @@ public interface IActionService
 /// <summary>
 ///     Provides various actions that can be performed in a game
 /// </summary>
-public class ActionService(ILogger logger, IGameService gameService) : IActionService
+public class ActionService(ILogger<ActionService> logger, IGameService gameService) : IActionService
 {
     public WebSocket WebSocket { private get; set; } = null!;
 
diff --git a/pac-man-board-game/Services/GameService.cs b/pac-man-board-game/Services/GameService.cs
index 2ca4f53..2fa6b03 100644
--- a/pac-man-board-game/Services/GameService.cs
+++ b/pac-man-board-game/Services/GameService.cs
@@ -17,7 +17,7 @@ public interface IGameService : IWebSocketService
 ///     The GameService class provides functionality for managing games in a WebSocket environment. It inherits from the
 ///     WebSocketService class.
 /// </summary>
-public class GameService(ILogger logger) : WebSocketService(logger), IGameService
+public class GameService(ILogger<WebSocketService> logger) : WebSocketService(logger), IGameService
 {
     /// <summary>
     ///     A thread-safe collection (SynchronizedCollection) of "Game" objects. Utilized for managing multiple game instances
diff --git a/pac-man-board-game/Services/WebSocketService.cs b/pac-man-board-game/Services/WebSocketService.cs
index ecbf8ef..a348fea 100644
--- a/pac-man-board-game/Services/WebSocketService.cs
+++ b/pac-man-board-game/Services/WebSocketService.cs
@@ -13,7 +13,7 @@ public interface IWebSocketService
 /// <summary>
 ///     WebSocketService class provides methods to send, receive and close a WebSocket connection.
 /// </summary>
-public class WebSocketService(ILogger logger) : IWebSocketService
+public class WebSocketService(ILogger<WebSocketService> logger) : IWebSocketService
 {
     /// <summary>
     ///     Sends the specified byte array as a text message through the WebSocket connection.
diff --git a/pac-man-board-game/pac-man-board-game.csproj b/pac-man-board-game/pac-man-board-game.csproj
index e5ed925..8c03a07 100644
--- a/pac-man-board-game/pac-man-board-game.csproj
+++ b/pac-man-board-game/pac-man-board-game.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
     <PropertyGroup>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <Nullable>enable</Nullable>
         <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
         <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion>