Packaging error when switching to arm64 (arm5 was OK)

I removed an external library and related code I had and it's now working.

I've tried turning the "Automatically managed signing" off and on again, then the issue disappeared. Note: rebuilding didn't help for me, cleaning either.

Personally I was able to solve this issue by rebuilding the project a second time. I think I was only experiencing it after revoking and requesting a certificate.