Couldnt Compile on Unreal Engine 4.25.3

I cant compile / import the assets:

Log file open, 08/29/20 22:45:12
LogInit: Display: Running engine for game: BullCowGame
LogPlatformFile: Not using cached read wrapper
LogTaskGraph: Started task graph with 5 named threads and 47 total threads with 3 sets of task threads.
LogStats: Stats thread started at 0.148536
LogPluginManager: Warning: Plugin 'RLLiveLink' exists at '../../../Engine/Plugins/Marketplace/RLLiveLink/RLLiveLink.uplugin' and '../../../Engine/Plugins/RLLiveLink/RLLiveLink.uplugin' - second location will be ignored
LogD3D11RHI: Loaded GFSDK_Aftermath_Lib.x64.dll
LogICUInternationalization: ICU TimeZone Detection - Raw Offset: +1:00, Platform Override: ''
LogPluginManager: Mounting plugin Paper2D
LogPluginManager: Mounting plugin AISupport
LogPluginManager: Mounting plugin LightPropagationVolume
LogPluginManager: Mounting plugin CameraShakePreviewer
LogPluginManager: Mounting plugin ActorLayerUtilities
LogPluginManager: Mounting plugin AnimationSharing
LogPluginManager: Mounting plugin CLionSourceCodeAccess
LogPluginManager: Mounting plugin CodeLiteSourceCodeAccess
LogPluginManager: Mounting plugin GitSourceControl
LogPluginManager: Mounting plugin KDevelopSourceCodeAccess
LogPluginManager: Mounting plugin NullSourceCodeAccess
LogPluginManager: Mounting plugin PerforceSourceControl
LogPluginManager: Mounting plugin PlasticSourceControl
LogPluginManager: Mounting plugin RiderSourceCodeAccess
LogPluginManager: Mounting plugin SubversionSourceControl
LogPluginManager: Mounting plugin UObjectPlugin
LogPluginManager: Mounting plugin VisualStudioCodeSourceCodeAccess
LogPluginManager: Mounting plugin VisualStudioSourceCodeAccess
LogPluginManager: Mounting plugin XCodeSourceCodeAccess
LogPluginManager: Mounting plugin AssetManagerEditor
LogPluginManager: Mounting plugin CryptoKeys
LogPluginManager: Mounting plugin CurveEditorTools
LogPluginManager: Mounting plugin DataValidation
LogPluginManager: Mounting plugin EditorScriptingUtilities
LogPluginManager: Mounting plugin FacialAnimation
LogPluginManager: Mounting plugin GameplayTagsEditor
LogPluginManager: Mounting plugin GeometryMode
LogPluginManager: Mounting plugin MacGraphicsSwitching
LogPluginManager: Mounting plugin MaterialAnalyzer
LogPluginManager: Mounting plugin MobileLauncherProfileWizard
LogPluginManager: Mounting plugin PluginBrowser
LogPluginManager: Mounting plugin SpeedTreeImporter
LogPluginManager: Mounting plugin DatasmithContent
LogPluginManager: Mounting plugin VariantManagerContent
LogPluginManager: Mounting plugin AlembicImporter
LogPluginManager: Mounting plugin AutomationUtils
LogPluginManager: Mounting plugin BackChannel
LogPluginManager: Mounting plugin ChaosCloth
LogPluginManager: Mounting plugin ChaosClothEditor
LogPluginManager: Mounting plugin ChaosEditor
LogPluginManager: Mounting plugin ChaosNiagara
LogPluginManager: Mounting plugin ChaosSolverPlugin
LogPluginManager: Mounting plugin CharacterAI
LogPluginManager: Mounting plugin GeometryCache
LogPluginManager: Mounting plugin GeometryCollectionPlugin
LogPluginManager: Mounting plugin GeometryProcessing
LogPluginManager: Mounting plugin PlanarCut
LogPluginManager: Mounting plugin PlatformCrypto
LogPluginManager: Mounting plugin ProxyLODPlugin
LogPluginManager: Mounting plugin SkeletalReduction
LogPluginManager: Mounting plugin Niagara
LogPluginManager: Mounting plugin MagicLeap
LogPluginManager: Mounting plugin MagicLeapLightEstimation
LogPluginManager: Mounting plugin MagicLeapMedia
LogPluginManager: Mounting plugin MagicLeapPassableWorld
LogPluginManager: Mounting plugin MLSDK
LogPluginManager: Mounting plugin AndroidMedia
LogPluginManager: Mounting plugin AvfMedia
LogPluginManager: Mounting plugin ImgMedia
LogPluginManager: Mounting plugin MediaCompositing
LogPluginManager: Mounting plugin MediaPlayerEditor
LogPluginManager: Mounting plugin WebMMedia
LogPluginManager: Mounting plugin WmfMedia
LogPluginManager: Mounting plugin MeshPainting
LogPluginManager: Mounting plugin TcpMessaging
LogPluginManager: Mounting plugin UdpMessaging
LogPluginManager: Mounting plugin ActorSequence
LogPluginManager: Mounting plugin LevelSequenceEditor
LogPluginManager: Mounting plugin MatineeToLevelSequence
LogPluginManager: Mounting plugin MovieRenderPipeline
LogPluginManager: Mounting plugin TemplateSequence
LogPluginManager: Mounting plugin NetcodeUnitTest
LogPluginManager: Mounting plugin NUTUnrealEngine4
LogPluginManager: Mounting plugin OnlineSubsystemGooglePlay
LogPluginManager: Mounting plugin OnlineSubsystemIOS
LogPluginManager: Mounting plugin OnlineSubsystem
LogPluginManager: Mounting plugin OnlineSubsystemNull
LogPluginManager: Mounting plugin OnlineSubsystemUtils
LogPluginManager: Mounting plugin LauncherChunkInstaller
LogPluginManager: Mounting plugin AndroidDeviceProfileSelector
LogPluginManager: Mounting plugin AndroidMoviePlayer
LogPluginManager: Mounting plugin AndroidPermission
LogPluginManager: Mounting plugin AppleImageUtils
LogPluginManager: Mounting plugin AppleMoviePlayer
LogPluginManager: Mounting plugin ArchVisCharacter
LogPluginManager: Mounting plugin AssetTags
LogPluginManager: Mounting plugin AudioCapture
LogPluginManager: Mounting plugin CableComponent
LogPluginManager: Mounting plugin CustomMeshComponent
LogPluginManager: Mounting plugin EditableMesh
LogPluginManager: Mounting plugin ExampleDeviceProfileSelector
LogPluginManager: Mounting plugin GoogleCloudMessaging
LogPluginManager: Mounting plugin GooglePAD
LogPluginManager: Mounting plugin IOSDeviceProfileSelector
LogPluginManager: Mounting plugin LinuxDeviceProfileSelector
LogPluginManager: Mounting plugin LocationServicesBPLibrary
LogPluginManager: Mounting plugin MobilePatchingUtils
LogPluginManager: Mounting plugin OculusVR
LogPluginManager: Mounting plugin PhysXVehicles
LogPluginManager: Mounting plugin PostSplashScreen
LogPluginManager: Mounting plugin ProceduralMeshComponent
LogPluginManager: Mounting plugin RuntimePhysXCooking
LogPluginManager: Mounting plugin SignificanceManager
LogPluginManager: Mounting plugin SoundFields
LogPluginManager: Mounting plugin SteamVR
LogPluginManager: Mounting plugin Synthesis
LogPluginManager: Mounting plugin WebMMoviePlayer
LogPluginManager: Mounting plugin WindowsMoviePlayer
LogPluginManager: Mounting plugin ScreenshotTools
Launching UnrealBuildTool... [C:/Program Files/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe -Mode=QueryTargets -Project="D:/Unreal/cpp_tutorial_gamedev/BullCowGame/BullCowGame.uproject" -Output="D:/Unreal/cpp_tutorial_gamedev/BullCowGame/Intermediate/TargetInfo.json"]
Launching UnrealBuildTool... [C:/Program Files/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe -Mode=QueryTargets -Project="D:/Unreal/cpp_tutorial_gamedev/BullCowGame/BullCowGame.uproject" -Output="D:/Unreal/cpp_tutorial_gamedev/BullCowGame/Intermediate/TargetInfo.json"]
LogDesktopPlatform: Warning: Unable to read target info for D:/Unreal/cpp_tutorial_gamedev/BullCowGame/BullCowGame.uproject
LogInit: Warning: Incompatible or missing module: BullCowGame
Running C:/Program Files/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="D:/Unreal/cpp_tutorial_gamedev/BullCowGame/BullCowGame.uproject" -TargetType=Editor -Progress -NoEngineChanges -NoHotReloadFromIDE
WARNING: The 'Developer' module type has been deprecated in 4.24. Use 'DeveloperTool' for modules that can be loaded by game/client/server targets in non-shipping configurations, or 'UncookedOnly' for modules that should only be loaded by uncooked editor and program targets (eg. modules containing blueprint nodes)
C:\Program Files\Epic Games\UE_4.25\Engine\Plugins\RLLiveLink\RLLiveLink.uplugin: warning: The 'Developer' module type has been deprecated in 4.24.
While compiling C:\Program Files\Epic Games\UE_4.25\Engine\Intermediate\Build\BuildRules\UE4Rules.dll:
c:\Program Files\Epic Games\UE_4.25\Engine\Plugins\RLLiveLink\Source\RLLiveLink\RLLiveLink.Build.cs(5,14) : error CS0101: Der Namespace '<globaler Namespace>' enth?lt bereits eine Definition f?r 'RLLiveLink'.
c:\Program Files\Epic Games\UE_4.25\Engine\Plugins\RLLiveLink\Source\RLLiveLinkEditor\RLLiveLinkEditor.Build.cs(4,14) : error CS0101: Der Namespace '<globaler Namespace>' enth?lt bereits eine Definition f?r 'RLLiveLinkEditor'.
ERROR: Unable to compile source files.
LogInit: Warning: Still incompatible or missing module: BullCowGame
LogCore: Engine exit requested (reason: EngineExit() was called)
LogExit: Preparing to exit.
LogModuleManager: Shutting down and abandoning module DesktopPlatform (46)
LogModuleManager: Shutting down and abandoning module PlatformCryptoOpenSSL (44)
LogModuleManager: Shutting down and abandoning module PlatformCryptoTypes (42)
LogModuleManager: Shutting down and abandoning module PlatformCrypto (40)
LogModuleManager: Shutting down and abandoning module AnimationModifiers (38)
LogModuleManager: Shutting down and abandoning module PropertyEditor (37)
LogModuleManager: Shutting down and abandoning module AudioEditor (34)
LogModuleManager: Shutting down and abandoning module TextureCompressor (32)
LogModuleManager: Shutting down and abandoning module RenderCore (30)
LogModuleManager: Shutting down and abandoning module Landscape (28)
LogModuleManager: Shutting down and abandoning module SlateRHIRenderer (26)
LogModuleManager: Shutting down and abandoning module OpenGLDrv (24)
LogModuleManager: Shutting down and abandoning module D3D11RHI (22)
LogModuleManager: Shutting down and abandoning module AnimGraphRuntime (20)
LogModuleManager: Shutting down and abandoning module Renderer (18)
LogModuleManager: Shutting down and abandoning module Engine (16)
LogModuleManager: Shutting down and abandoning module CoreUObject (14)
LogModuleManager: Shutting down and abandoning module NetworkFile (12)
LogModuleManager: Shutting down and abandoning module CookedIterativeFile (10)
LogModuleManager: Shutting down and abandoning module StreamingFile (8)
LogModuleManager: Shutting down and abandoning module SandboxFile (6)
LogModuleManager: Shutting down and abandoning module PakFile (4)
LogModuleManager: Shutting down and abandoning module RSA (3)
LogExit: Exiting.
Log file closed, 08/29/20 22:45:21
AndroidPlatformFactory.RegisterBuildPlatforms: UnrealBuildTool.AndroidPlatformSDK has no valid SDK
IOSPlatformFactory.RegisterBuildPlatforms: UnrealBuildTool.IOSPlatformSDK has no valid SDK
LinuxPlatformFactory.RegisterBuildPlatforms: UnrealBuildTool.LinuxPlatformSDK has no valid SDK
WindowsPlatformFactory.RegisterBuildPlatforms: UnrealBuildTool.WindowsPlatformSDK using manually installed SDK
ProjectFileGenerator.GenerateProjectFiles: Discovering modules, targets and source code for project...
WindowsPlatform.FindVSInstallDirs: Found Visual Studio installation: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional (Product=Microsoft.VisualStudio.Product.Professional, Version=16.7.30413.136, Sort=0)
WindowsPlatform.FindToolChainDirs: Found Visual Studio toolchain: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.27.29110 (Version=14.27.29111)
PluginDescriptor.FromFile: WARNING: The 'Developer' module type has been deprecated in 4.24. Use 'DeveloperTool' for modules that can be loaded by game/client/server targets in non-shipping configurations, or 'UncookedOnly' for modules that should only be loaded by uncooked editor and program targets (eg. modules containing blueprint nodes)
PluginDescriptor.FromFile: C:\Program Files\Epic Games\UE_4.25\Engine\Plugins\RLLiveLink\RLLiveLink.uplugin: warning: The 'Developer' module type has been deprecated in 4.24.
DynamicCompilation.RequiresCompilation: Compiling C:\Program Files\Epic Games\UE_4.25\Engine\Intermediate\Build\BuildRules\UE4Rules.dll: Removed source file (D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Advertising\Advertising\Advertising.Build.cs)
DynamicCompilation.CompileAssembly: While compiling C:\Program Files\Epic Games\UE_4.25\Engine\Intermediate\Build\BuildRules\UE4Rules.dll:
DynamicCompilation.CompileAssembly: c:\Program Files\Epic Games\UE_4.25\Engine\Plugins\RLLiveLink\Source\RLLiveLink\RLLiveLink.Build.cs(5,14) : error CS0101: Der Namespace '<globaler Namespace>' enthält bereits eine Definition für 'RLLiveLink'.
DynamicCompilation.CompileAssembly: c:\Program Files\Epic Games\UE_4.25\Engine\Plugins\RLLiveLink\Source\RLLiveLinkEditor\RLLiveLinkEditor.Build.cs(4,14) : error CS0101: Der Namespace '<globaler Namespace>' enthält bereits eine Definition für 'RLLiveLinkEditor'.
UnrealBuildTool.Main: ERROR: Unable to compile source files.
UnrealBuildTool.Main: BuildException: Unable to compile source files.
UnrealBuildTool.Main:    bei UnrealBuildTool.DynamicCompilation.CompileAssembly(FileReference OutputAssemblyPath, HashSet`1 SourceFileNames, List`1 ReferencedAssembies, List`1 PreprocessorDefines, Boolean TreatWarningsAsErrors) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\DynamicCompilation.cs:Zeile 383.
UnrealBuildTool.Main:    bei UnrealBuildTool.DynamicCompilation.CompileAndLoadAssembly(FileReference OutputAssemblyPath, HashSet`1 SourceFileNames, List`1 ReferencedAssembies, List`1 PreprocessorDefines, Boolean DoNotCompile, Boolean TreatWarningsAsErrors) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\DynamicCompilation.cs:Zeile 450.
UnrealBuildTool.Main:    bei UnrealBuildTool.RulesAssembly..ctor(RulesScope Scope, List`1 BaseDirs, IReadOnlyList`1 Plugins, Dictionary`2 ModuleFileToContext, List`1 TargetFiles, FileReference AssemblyFileName, Boolean bContainsEngineModules, Nullable`1 DefaultBuildSettings, Boolean bReadOnly, Boolean bSkipCompile, RulesAssembly Parent) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\RulesAssembly.cs:Zeile 110.
UnrealBuildTool.Main:    bei UnrealBuildTool.RulesCompiler.CreateEngineOrEnterpriseRulesAssembly(RulesScope Scope, List`1 RootDirectories, String AssemblyPrefix, IReadOnlyList`1 Plugins, Boolean bReadOnly, Boolean bSkipCompile, RulesAssembly Parent) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\RulesCompiler.cs:Zeile 479.
UnrealBuildTool.Main:    bei UnrealBuildTool.RulesCompiler.CreateEngineRulesAssembly(Boolean bUsePrecompiled, Boolean bSkipCompile) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\RulesCompiler.cs:Zeile 398.
UnrealBuildTool.Main:    bei UnrealBuildTool.ProjectFileGenerator.AddProjectsForAllTargets(PlatformProjectGeneratorCollection PlatformProjectGenerators, List`1 AllGames, List`1 AllTargetFiles, String[] Arguments, ProjectFile& EngineProject, ProjectFile& EnterpriseProject, List`1& GameProjects, Dictionary`2& ProgramProjects) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\ProjectFileGenerator.cs:Zeile 2279.
UnrealBuildTool.Main:    bei UnrealBuildTool.ProjectFileGenerator.GenerateProjectFiles(PlatformProjectGeneratorCollection PlatformProjectGenerators, String[] Arguments) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\ProjectFileGenerator.cs:Zeile 753.
UnrealBuildTool.Main:    bei UnrealBuildTool.GenerateProjectFilesMode.Execute(CommandLineArguments Arguments) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\GenerateProjectFilesMode.cs:Zeile 198.
UnrealBuildTool.Main:    bei UnrealBuildTool.UnrealBuildTool.Main(String[] ArgumentsArray) in D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:Zeile 550.
Timeline.Print: Timeline:
Timeline.Print: 
Timeline.Print: [ 0.000]
Timeline.Print: [ 0.000](+0.023) <unknown>
Timeline.Print: [ 0.023](+0.051) XmlConfig.ReadConfigFiles()
Timeline.Print: [ 0.075](+0.000) SingleInstanceMutex.Acquire()
Timeline.Print: [ 0.075](+0.040) UEBuildPlatform.RegisterPlatforms()
Timeline.Print:   0.075          [ 0.000](+0.020) Initializing InstalledPlatformInfo
Timeline.Print:   0.096          [ 0.021](+0.000) Querying types
Timeline.Print:   0.097          [ 0.022](+0.000) MacPlatformFactory
Timeline.Print:   0.098          [ 0.023](+0.000) TVOSPlatformFactory
Timeline.Print:   0.098          [ 0.023](+0.012) AndroidPlatformFactory
Timeline.Print:   0.110          [ 0.035](+0.000) HoloLensPlatformFactory
Timeline.Print:   0.110          [ 0.035](+0.001) IOSPlatformFactory
Timeline.Print:   0.112          [ 0.037](+0.002) LinuxPlatformFactory
Timeline.Print:   0.115          [ 0.040](+0.000) LuminPlatformFactory
Timeline.Print:   0.115          [ 0.040](+0.000) WindowsPlatformFactory
Timeline.Print: [ 0.115](+0.205) <unknown>
Timeline.Print: [ 0.321](+0.001) Finding engine modules
Timeline.Print: [ 0.322](+0.002) Finding plugin modules
Timeline.Print: [ 0.336](+0.236) Compiling rules assembly (UE4Rules.dll)
Timeline.Print: [ 0.582](+0.000) FileMetadataPrefetch.Stop()
Timeline.Print: [ 0.583]

Are you using Rider? You might need to update it.

Rider?
No i use normal Visual Studio 2019. The latest Version.
But if you mean RLLifeLink that only a plugin for Character Creator. Nothing Serious

Well it seems to be causing the problem. In the .uproject file could you try disabling it?

"Modules": [
		{
			"Name": "BullCowGame",
			"Type": "Runtime",
			"LoadingPhase": "Default",
			"AdditionalDependencies": [
				"Engine"
			]
		}
	],
	"Plugins": [
		{
			"Name": "RLLiveLink",
			"Enabled": false
		}
	]

Thank you! That was it.
After deleting the plugin (because i dont usw it often) the solution compile and starts…
thank you

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