@andy-thomas-83 were you able to find a solution to this error, experiencing same after upgrading to 13.1.7
File “/openedx/venv/lib/python3.8/site-packages/pymongo/topology.py”, line 208, in _select_servers_loop
raise ServerSelectionTimeoutError(
pymongo.errors.ServerSelectionTimeoutError: No servers found yet
Further investigation revealed the error below as the culprit
“/tmp/mako_lms/f1543ed24543a70de2c17ebfc03bb76a/polimix/lms/templates/dashboard/_dashboard_course_listing.html.py”, line 555, in render_body
if course_overview.may_certify() and cert_status:
AttributeError: ‘CourseOverview’ object has no attribute ‘may_certify’