Trying to archive to a .ipa fails...

I am trying to archive my app as an .ipa to upload to TestFlight, and I get an error saying:
Code Block
Command CompileSwift failed with a nonzero exit code

this error is that same for my watch app and widget...

If I click into the error, it says that there is no error: imgur.com/a/O0yJDKg

any help appreciated!
Trying to archive to a .ipa fails...
 
 
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