Access Forbidden to Theme Editor

Hello everyone,

I’ve been running my blog (https://www.amynelsonmile.net/booksblog/) on WordPress for about a month now. I made a lot of changes to my theme when I first set it up, and then left it for a while.

Today I thought I’d go in and change some links, so I went to do this, and I keep getting this error message:

Forbidden
You don’t have permission to access /booksblog/wp-admin/theme-editor.php on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

I notice that suddenly it’s telling me I have to think about the wp-admin folder, which I never had to worry about before.

However, I went in and changed the permissions for the wp-admin folder generally and the theme-editor.php folder specifically (although not the others in that folder).

I’m still not able to make the changes.

Any ideas about what I’m doing wrong? All help gratefully accepted.

Amy