Created attachment 889551 [details] [test run]After reorder caserun, system go to error page. Description of problem: as subject Version-Release number of selected component (if applicable): v3.8.7-4 on devel server How reproducible: 100% Steps to Reproduce: 1.Enter a run detail page. https://tcms-devel.app.eng.nay.redhat.com/run/72307/ 2.Click 'cases--re-order' link, then change case order. 3.Clicl 'cases--Done sorting' link. Actual results: System go to error page. Expected results: System can save new order right. Additional info:
Missing import django.db.transaction when gerrit merge code.
Verify the bug on v3.8.7-4 on devel server.--->Pass Verify steps are same as description.