I’m new to website building. Recently I visited my website which I haven’t worked on in a while. I tried to open a few links in the WordPress sidebar (such as themes, plugins, etc.) and I keep getting this error. I don’t know what to do!
First try deleting your htaccess file, in the root folder.
Also try reinstalling WordPress. Go to WordPress.org and download the zip file. Unzip it into your installation (you’ll need to move the files out of the /wordpress folder in the zip).
If that doesn’t work, reach out to your host, as this is a tricky problem to troubleshoot without server access.