Please Help! I have this packaging error and I don't know what to do

Please Help
Here is the Log:

UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: === Handled ensure: ===
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error:
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: Ensure condition failed: InVersion != nullptr && FCString::Strlen(InVersion) [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/Misc/NetworkVersion.cpp] [Line: 33]
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: ProjectVersion used for network version must be a valid string!
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: Stack:
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff8e15a2026 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff8e0fa0515 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff8cc67fa63 UE4Editor-Engine.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff8df3e5f02 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff61bb992da UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff61bb90eec UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff61bb9125a UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff61bba52bd UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff61bba736e UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff97c847034 KERNEL32.DLL!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ff97e342651 ntdll.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogInit: Display: LogOutputDevice: Error: end: stack for UAT

Hello did you upgrade you project from a previous Engine Version to a newer one?

I just had the same error in 4.26 after first having the project version set in:
Project Settings β†’ Project - Description β†’ Project Version
…and then leaving the field blank for a new build.

Not leaving it blank fixed it for me.

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