I just had the same issue. It turns out that Apple has updated the program license agreement and you just have to accept it. It's a pity that after so many years, Xcode can't show some message instead of crashing.
The information on Apple Developer Account says:
The program license agreement has been updated.
[Owner] needs to accept the latest Apple Developer Program License
Agreement for your team to continue integrating new technologies,
submitting content to App Review, accessing Certificates, Identifiers
and Profiles, and more.
PiotrG
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