On versions older than 2022.10.0, the (experimental) bootstrap endpoint does not exist. The HTTP request returns 404, but produce_bootstrap_output() returns successfully but with an empty API key. That's because the case that checks for the 404 status just adds a "message": https://github.com/posit-dev/rsconnect-python/blob/main/rsconnect/json_web_token.py#L127-L131.
bootstrap should either return an API key and exit 0, or if no key is returned, for whatever reason, it should exit 1.
On versions older than 2022.10.0, the (experimental) bootstrap endpoint does not exist. The HTTP request returns 404, but
produce_bootstrap_output()returns successfully but with an empty API key. That's because the case that checks for the 404 status just adds a "message": https://github.com/posit-dev/rsconnect-python/blob/main/rsconnect/json_web_token.py#L127-L131.bootstrapshould either return an API key and exit 0, or if no key is returned, for whatever reason, it should exit 1.