title: Airflow Log file does not exist:
body: <p>Airflow was working fine for several weeks and suddenly started getting errors for a few days.
  Dags fail randomly with this error.</p>
  <blockquote>
  <p>Log file does not exist: airflow_path/1.log<br />
  Fetching from: http://:8793/airflow_path/1.log<br />
  *** Failed to fetch log file from worker. The request to ':///' is missing either an 'http://</p>
  </blockquote>