Issue Summary

This is reproducible on Data Center: yes

Steps to Reproduce

1. Create a new basic project
2. Create a new empty insight schema
3. Create a object type in the new empty schema
4. Go to attribute tab and create a attribute with type 'Version', and type value is the new project in step 1
5. Delete that project in a seperate tab.
6. Reload the Object schema page in your old tab

Expected Results

The page load as before

Actual Results

Get a 500 error on GET:<Jira_base_URL>/rest/insight/1.0/objecttype/<object_type_id>/attributes?includeChildren=false&_=1660183200463

Workaround

No workaround found