Help me find some bad code – it’s hiding

I had set the blog up using ‘beta-1’ as the directory (bad decision) and after moving it to the root, I decided i wanted to have the ‘beta_1’ removed, so I found “Changing the Site URL” in the WP documentation and everything worked just fine.

UNTIL – I went to access my admin area and found that it has lost all its formatting.

The source code that supports the unformatted admin page is pasted below. I can see some remaining instances of ‘beta_1’ in the code and I think I could fix this if I could only find where this stuff is hiding.

I’ve tried to search the data base and can’t find it. I am in WAY over my head on this and just need a kind helping hand.

My URL is https://jimseybert.com

[huge chunk of code moderated]