Read-Only Error Message when editing white list

Please follow the below template, it will help us to help you!

If you are Experiencing issues with a Pi-hole install that has non-standard elements (e.g you are using nginx instead of lighttpd, or there is some other aspect of your install that is customised) - please use the Community Help category.

Expected Behaviour:

edit or delete black/white list

Actual Behaviour:

read only error message

Debug Token:

https://tricorder.pi-hole.net/toNbwSnB/