SSL errors when running worker In secondary environment

I have created a worker with multiple environments. The main one works correctly:

However the secondary ones (eg. in staging environment) fail with SSL errors:

https://staging.ssr.heroheroco.workers.dev/

This site can’t provide a secure connection
**staging.ssr.heroheroco.workers.dev** uses an unsupported protocol.
ERR_SSL_VERSION_OR_CIPHER_MISMATCH

The same with curl.

It has been some time now, so I guess the certificates should have already been generated.