Created attachment 892448 [details] [test case]When create a case in the following case, system will go to 500 error page. Description of problem: as subject Version-Release number of selected component (if applicable): v3.8.7-4 on qa server. How reproducible: 100% Steps to Reproduce: 1.Enter a plan detail page. https://tcms.app.qa.eng.nay.redhat.com/plan/10687/yang-qiu-ce-shi-plan-a#testcases 2.Click 'case-write new case' link to enter create case page. 3.Fill case info includes Summary|Component|Category|Setup|Actions|Expected Results|Breakdown|Priority|Default Tester|Product|Automated. 4.Click 'save and return to plan' btn. Actual results: system will go to 500 error page. Expected results: System save the new case right. Additional info:
This issue caused by dirty data in db. When query user by User.objects.get(Q(email='qiyang') | Q(username='qiyang')) there are Multiple objects returns. While the dirty data caused by wrong config.