Appwrite (self-hosted) stopped working after updating from 1.6.2 that was stable. Getting the general_server_error.
Mentioning I fallowed all steps for upgrading and ran migrations.
This time however did not backup prior.
TL;DR
Appwrite self-hosted stopped functioning after updating from 1.6.2 to 1.7, resulting in a general_server_error. User followed all upgrade steps and performed migrations but did not back up prior.