Surely if you’re using cPanel you should be able to access error logs from there
Fatal error: Class ‘WP_Query’ not found on line 2
With Go Daddy I assume you are using a cPanel?
Hi Russ just wanted to check you did the following;
In file Manager, cPanel you;
1. went into wp-contents/themes, found the new theme you installed and altered it so it had .old on the end, so for example it should now be something like, ‘lightbright.old’