In this PR:
https://github.com/getsentry/sentry-python/pull/3073/files#diff-79a3788011179b24960642acf26b7cd5a7daaef510906fb683364309338546fcR47

there is probably a string.join() that lead to this error:
https://sentry.sentry.io/issues/5448730468/?project=1&query=release%3Abackend%40a13563880494efef0811369c3265d546508f2703&referrer=release-issue-stream

Make sure that _get_safe_command and _get_safe_key can handle integers.