Tried to do an upgrade through the web UI, it failed.
I then did the usual
cd /var/discourse git pull ./launcher rebuild app
but it also failed (discourse-upgrade-failed.txt):
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one
I’ve found this error, scrolling up.
NoMethodError: undefined method `attributes’ for TopicListItemSerializer:Class
Now my website is down and I’m really clueless.
How to approach this and bring my website back online again?