I'm about to pack the game but I can't pack it.

MapCheck: Map check complete: 0 Error(s), 0 Warning(s), took 0.469ms to complete.

UATHelper: Packaging (Windows): LogInit: Display: Warning/Error Summary (Unique only)

UATHelper: Packaging (Windows): LogInit: Display: Success 0 error(s), 1 warning(s)

UATHelper: Packaging (Windows): AutomationTool exiting with ExitCode=1 (Error_Unknown)

PackagingResults: Error: Unknown Error

UATHelper: Packaging (Windows): LogInit: Display: Warning/Error Summary (Unique only)

UATHelper: Packaging (Windows): LogInit: Display: Success 0 error(s), 1 warning(s) UATHelper: Packaging (Windows): AutomationTool exiting with ExitCode=1 (Error_Unknown)

PackagingResults: Error: Unknown Error