How to fix this problem?

error

UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Warning:
UATHelper: Packaging (Windows (64-bit)):   
UATHelper: Packaging (Windows (64-bit)):   Script Stack (0 frames):
UATHelper: Packaging (Windows (64-bit)):   
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: begin: stack for UAT
PackagingResults: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: === Critical error: ===
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: Assertion failed: World [File:D:/Build/++UE4+Licensee/Sync/Engine/Source/Editor/UnrealEd/Private/CookOnTheFlyServer.cpp] [Line: 3594]
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe8164a799 KERNELBASE.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe2adb0b06 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe2adb3ee8 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe2ab40c0d UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe2aacbe95 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe2aace1d0 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe2509cfb1 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe250a4103 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe250c4c6c UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe24f31031 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe24f5bd5b UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ff68d1f363a UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ff68d1eb7ec UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ff68d1ebb5a UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ff68d1fe31d UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ff68d20040a UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe82d17bd4 KERNEL32.DLL!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: [Callstack] 0x00007ffe8462ce51 ntdll.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)):   LogWindows: Error: end: stack for UAT
PackagingResults: Error: === Critical error: ===
PackagingResults: Error: Assertion failed: World [File:D:/Build/++UE4+Licensee/Sync/Engine/Source/Editor/UnrealEd/Private/CookOnTheFlyServer.cpp] [Line: 3594]
PackagingResults: Error: [Callstack] 0x00007ffe8164a799 KERNELBASE.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe2adb0b06 UE4Editor-Core.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe2adb3ee8 UE4Editor-Core.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe2ab40c0d UE4Editor-Core.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe2aacbe95 UE4Editor-Core.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe2aace1d0 UE4Editor-Core.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe2509cfb1 UE4Editor-UnrealEd.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe250a4103 UE4Editor-UnrealEd.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe250c4c6c UE4Editor-UnrealEd.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe24f31031 UE4Editor-UnrealEd.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe24f5bd5b UE4Editor-UnrealEd.dll!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ff68d1f363a UE4Editor-Cmd.exe!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ff68d1eb7ec UE4Editor-Cmd.exe!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ff68d1ebb5a UE4Editor-Cmd.exe!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ff68d1fe31d UE4Editor-Cmd.exe!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ff68d20040a UE4Editor-Cmd.exe!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe82d17bd4 KERNEL32.DLL!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffe8462ce51 ntdll.dll!UnknownFunction []
PackagingResults: Error: end: stack for UAT
UATHelper: Packaging (Windows (64-bit)): Took 91.4280742s to run UE4Editor-Cmd.exe, ExitCode=3
UATHelper: Packaging (Windows (64-bit)): ERROR: Cook failed.
UATHelper: Packaging (Windows (64-bit)):        (see C:\Users\Acer\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.25\Log.txt for full exception trace)
PackagingResults: Error: Cook failed.
UATHelper: Packaging (Windows (64-bit)): AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults: Error: Unknown Cook Fai