Hi Kyle,
I am getting this error while upgrading from 8.15.1. I recently forced upgrade for PCF8574 issue. Is that the reason for this error?
File "/home/mycopitt/Mycodo/mycodo/mycodo_flask/routes_admin.py", line 534, in admin_upgrade
current_latest_major_version = current_latest_release.split('.')[0]
AttributeError: 'NoneType' object has no attribute 'split'