After update Zammad 4.0 to 5.0 NameError and Bad gateway issues

Infos:

  • Used Zammad version: 3.2 to 4.0

  • Used Zammad installation type: Zammad

  • Operating system: centos 8

  • Browser + version: chrome Version 106.0.5249.91

  • .9.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in require’ /opt/zammad/app/models/observer/organization/ref_object_touch.rb:3:in ': uninitialized constant ActiveRecord::Observer (NameError)

Duplicate of Zammad 4.0 to 5.0 NameError and Bad gateway issues