ci_cd settings tab returns 500 error
we've upgraded our gitlab to 11.1 but after that downgraded it to 11.0 because of diffs issue.
Now when i am trying to watch ci_cd settings in a couple of projects gitlab returns 500 error
here is error from production.log
ActionView::Template::Error (key must be 32 bytes):
4:
5: - id = variable&.id
6: - key = variable&.key
7: - value = variable&.value
8: - is_protected = variable && !only_key_value ? variable.protected : false
9:
10: - id_input_name = "#{form_field}[variables_attributes][][id]"
what can be wrong and how can we fix it?