Please follow the below template, it will help us to help you!
Expected Behaviour:
Open Blacklist on admin console on web interface from any client to manually add domains.
Actual Behaviour:
Page opens but immediately freezes and mouse cursor icon doesn't change. Get non-respsonding error from web browser. All other pages/options in the web interface work as expected.
Debug Token:
https://tricorder.pi-hole.net/6aaw2h4107
Issue resolved. Please ignore.