I had the same issue:
Internal error: missing PackageDescriptionModule
My current system:
MacBook Pro (13-inch, M1, 2020)
macOS Monterey 12.1
Xcode 13.2
I downloaded Xcode 13.2 from the developer page as advised on the first page of this forum and this fixed the issue.
Hoping the AppStore version gets fixed soon.
buggy
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