Packaging error (could not save to memory cache)

Hello
One error keeps me from packaging my project, Does anyone know how to fix this?
UATHelper: Packaging (Windows (64-bit)): LogDerivedDataCache: Error: Could not save memory cache C:/Users//AppData/Local/UnrealEngine/4.18/DerivedDataCache/Boot.ddc.

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Hey did you ever get this worked out?