When compiling the project, it returns an error.What does it mean?

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
BuildMode.Execute: Command line: “D:\epic_games\UE_4.25\Engine\Binaries\DotNET\UnrealBuildTool.exe” Plan_Z Win64 Development -Project=“E:\unrial engine\Plan_Z 4.25\Plan_Z.uproject” “E:\unrial engine\Plan_Z 4.25\Plan_Z.uproject” -NoUBTMakefiles -remoteini=“E:\unrial engine\Plan_Z 4.25” -skipdeploy -Manifest=“E:\unrial engine\Plan_Z 4.25\Intermediate\Build\Manifest.xml” -NoHotReload -log=“C:\Users\russi\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+epic_games+UE_4.25\UBT-Plan_Z-Win64-Development.txt”
DynamicCompilation.RequiresCompilation: Compiling E:\unrial engine\Plan_Z 4.25\Intermediate\Build\BuildRules\Plan_ZModuleRules.dll: E:\unrial engine\Plan_Z 4.25\Source\Plan_Z\Plan_Z.Build.cs is newer
DynamicCompilation.CompileAssembly: While compiling E:\unrial engine\Plan_Z 4.25\Intermediate\Build\BuildRules\Plan_ZModuleRules.dll:
DynamicCompilation.CompileAssembly: e:\unrial engine\Plan_Z 4.25\Source\Plan_Z\Plan_Z.Build.cs(15,36) : error CS0122: “UnrealBuildTool.BuildConfiguration” недоступен в силу его уровня защиты
UnrealBuildTool.Main: ERROR: Unable to compile source files.
UnrealBuildTool.Main: BuildException: Unable to compile source files.
UnrealBuildTool.Main: в UnrealBuildTool.DynamicCompilation.CompileAssembly(FileReference OutputAssemblyPath, HashSet1 SourceFileNames, List1 ReferencedAssembies, List1 PreprocessorDefines, Boolean TreatWarningsAsErrors) в D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\DynamicCompilation.cs:строка 383 UnrealBuildTool.Main: в UnrealBuildTool.DynamicCompilation.CompileAndLoadAssembly(FileReference OutputAssemblyPath, HashSet1 SourceFileNames, List1 ReferencedAssembies, List1 PreprocessorDefines, Boolean DoNotCompile, Boolean TreatWarningsAsErrors) в D:\Build++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\DynamicCompilation.cs:строка 450
UnrealBuildTool.Main: в UnrealBuildTool.RulesAssembly…ctor(RulesScope Scope, List1 BaseDirs, IReadOnlyList1 Plugins, Dictionary2 ModuleFileToContext, List1 TargetFiles, FileReference AssemblyFileName, Boolean bContainsEngineModules, Nullable1 DefaultBuildSettings, Boolean bReadOnly, Boolean bSkipCompile, RulesAssembly Parent) в D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\RulesAssembly.cs:строка 110 UnrealBuildTool.Main: в UnrealBuildTool.RulesCompiler.CreateProjectRulesAssembly(FileReference ProjectFileName, Boolean bUsePrecompiled, Boolean bSkipCompile) в D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\RulesCompiler.cs:строка 603 UnrealBuildTool.Main: в UnrealBuildTool.RulesCompiler.CreateTargetRulesAssembly(FileReference ProjectFile, String TargetName, Boolean bSkipRulesCompile, Boolean bUsePrecompiled, FileReference ForeignPlugin) в D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\RulesCompiler.cs:строка 665 UnrealBuildTool.Main: в UnrealBuildTool.UEBuildTarget.Create(TargetDescriptor Descriptor, Boolean bSkipRulesCompile, Boolean bUsePrecompiled) в D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:строка 675 UnrealBuildTool.Main: в UnrealBuildTool.BuildMode.CreateMakefile(BuildConfiguration BuildConfiguration, TargetDescriptor TargetDescriptor, ISourceFileWorkingSet WorkingSet) в D:\Build\++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:строка 487 UnrealBuildTool.Main: в UnrealBuildTool.BuildMode.Build(List1 TargetDescriptors, BuildConfiguration BuildConfiguration, ISourceFileWorkingSet WorkingSet, BuildOptions Options, FileReference WriteOutdatedActionsFile) в D:\Build++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:строка 247
UnrealBuildTool.Main: в UnrealBuildTool.BuildMode.Execute(CommandLineArguments Arguments) в D:\Build++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:строка 219
UnrealBuildTool.Main: в UnrealBuildTool.UnrealBuildTool.Main(String] ArgumentsArray) в D:\Build++UE4+Licensee\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:строка 550
Timeline.Print: Timeline:
Timeline.Print:
Timeline.Print: 0.000]
Timeline.Print: 0.000](+0.032) <unknown>
Timeline.Print: 0.032](+0.003) FileMetadataPrefetch.QueueEngineDirectory()
Timeline.Print: 0.035](+0.350) XmlConfig.ReadConfigFiles()
Timeline.Print: 0.386](+0.000) SingleInstanceMutex.Acquire()
Timeline.Print: 0.386](+0.110) UEBuildPlatform.RegisterPlatforms()
Timeline.Print: 0.387 0.001](+0.053) Initializing InstalledPlatformInfo
Timeline.Print: 0.441 0.054](+0.000) Querying types
Timeline.Print: 0.443 0.056](+0.002) MacPlatformFactory
Timeline.Print: 0.446 0.059](+0.000) TVOSPlatformFactory
Timeline.Print: 0.446 0.059](+0.037) AndroidPlatformFactory
Timeline.Print: 0.483 0.097](+0.000) HoloLensPlatformFactory
Timeline.Print: 0.483 0.097](+0.005) IOSPlatformFactory
Timeline.Print: 0.489 0.103](+0.006) LinuxPlatformFactory
Timeline.Print: 0.495 0.109](+0.000) LuminPlatformFactory
Timeline.Print: 0.496 0.109](+0.001) WindowsPlatformFactory
Timeline.Print: 0.504](+0.030) TargetDescriptor.ParseCommandLine()
Timeline.Print: 0.553](+0.845) UEBuildTarget.Create()
Timeline.Print: 0.557 0.004](+0.840) RulesCompiler.CreateTargetRulesAssembly()
Timeline.Print: 0.557 0.004 0.000](+0.459) <unknown>
Timeline.Print: 1.017 0.464 0.459](+0.102) Finding engine modules
Timeline.Print: 1.120 0.567 0.562](+0.005) Finding plugin modules
Timeline.Print: 1.126 0.573 0.568](+0.081) <unknown>
Timeline.Print: 1.207 0.654 0.649](+0.017) Finding program modules
Timeline.Print: 1.225 0.672 0.667](+0.007) Finding program targets
Timeline.Print: 1.243 0.689 0.685](+0.155) Compiling rules assembly (Plan_ZModuleRules.dll)
Timeline.Print: 1.398](+0.036) <unknown>
Timeline.Print: 1.435](+0.000) FileMetadataPrefetch.Stop()
Timeline.Print: 1.441]

недоступен в силу его уровня-- in English-(unavailable due to its level)