Receiving a "PackagingResults:Error: Error Unknown Error" when I try to package

I’m trying to create an executable of my project so that I can run my level on any windows machine but every time I try to package it, I immediately get this error. I’ve no idea how to resolve the issue so I’m hoping someone here can provide a solution or at get an idea of what it could be. Can anyone help me? I’ve provided the log as an attachment.

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