Can't delete 301 redirect on subdomain

I have a 301 redirect I added to a subdomain and I cannot delete it from the user account, it comes up with an error:
"An error occurred while trying to delete this record."

I can't find any way of deleting this redirect. Is there a way to do it manually? Or better yet fix CWP 7 so it works properly?

I tried deleting the subdomain entirely and that just makes my efforts to delete the redirect not work OR show an error message - it simply does not do anything.

I have the same problem.

Fixed it by loging in as root and changing redirect.json file in .conf/.redirect directory.