Exception

[koropets]

  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2446, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1969, in finalize_request
    response = self.process_response(response)
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2266, in process_response
    response = handler(response)
  File "/usr/local/lib/python3.7/site-packages/gordo/server/prometheus/metrics.py", line 132, in _end_prometheus
    url_rule = url_rule_to_str(request.url_rule)
  File "/usr/local/lib/python3.7/site-packages/gordo/server/prometheus/metrics.py", line 26, in url_rule_to_str
    return url_rule.rule
AttributeError: 'NoneType' object has no attribute 'rule'```