Catching errors being thrown within module

I'm using gevent's WSGIServer's serve_forever() method with my own certificate. Something like this:

http_server = WSGIServer(arguments)
http_server.serve_forever()

Obviously, since the certificate isn't recognised, it throws an error:

Traceback (most recent call last):
  File "src/gevent/greenlet.py", line 854, in gevent._gevent_cgreenlet.Greenlet.run
  File "/usr/local/lib/python3.7/dist-packages/gevent/baseserver.py", line 34, in _handle_and_close_when_done
    return handle(*args_tuple)
  File "/usr/local/lib/python3.7/dist-packages/gevent/server.py", line 233, in wrap_socket_and_handle
    with _closing_socket(self.wrap_socket(client_socket, **self.ssl_args)) as ssl_socket:
  File "/usr/local/lib/python3.7/dist-packages/gevent/_ssl3.py", line 802, in wrap_socket
    ciphers=ciphers)
  File "/usr/local/lib/python3.7/dist-packages/gevent/_ssl3.py", line 312, in __init__
    raise x
  File "/usr/local/lib/python3.7/dist-packages/gevent/_ssl3.py", line 308, in __init__
    self.do_handshake()
  File "/usr/local/lib/python3.7/dist-packages/gevent/_ssl3.py", line 667, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: SSLV3_ALERT_CERTIFICATE_UNKNOWN] sslv3 alert certificate unknown (_ssl.c:1091)
2021-02-25T07:44:54Z <Greenlet at 0x7f5d8ffe5b90: _handle_and_close_when_done(<bound method StreamServer.wrap_socket_and_handle , <bound method StreamServer.do_close of <WSGIServer, (<gevent._socket3.socket [closed] at 0x7f5d9b91a1d)> failed with SSLError

I tried to pass a file object to the error_log argument:

file_with_errors = open("path/to/file", "+w")
http_server = WSGIServer(arguments, error_log=file_with_errors)
http_server.serve_forever()

and I tried simply catching the error:

http_server = WSGIServer(arguments)
try:
    http_server.serve_forever()
except:
    do_something()

but none of these work, which tells me that the error is being thrown and logged somewhere within the gevent module.

To confirm this, I tried:

import io

def func():
    http_server = WSGIServer(arguments)
    http_server.serve_forever()

try:
    _orig_stderr = sys.stderr
    _new_stderr = io.StringIO()
    sys.stderr = _new_stderr
    func()
except:
    file_with_errors = open("path/to/file", "+w")
    _new_stderr.seek(0)
    output = _new_stderr.read()
    file_with_errors.write(output)
    sys.stderr = _orig_stderr
    file_with_errors.close()

and sent a KeyboardInterrupt, which worked. The errors were logged in the file.

Is there any way for me to catch and redirect the error traceback?

from Catching errors being thrown within module