Traceback (most recent call last):
  File "/home/dh_edqwdm/trac-virtenv/lib/python3.10/site-packages/trac/web/_fcgi.py", line 572, in run
    protocolStatus, appStatus = self.server.handler(self)
  File "/home/dh_edqwdm/trac-virtenv/lib/python3.10/site-packages/trac/web/_fcgi.py", line 1250, in handler
    write(b'') # in case body was empty
  File "/home/dh_edqwdm/trac-virtenv/lib/python3.10/site-packages/trac/web/_fcgi.py", line 1203, in write
    assert headers_set, 'write() before start_response()'
AssertionError: write() before start_response()