I then discovered that my site is showing a tag page for any text I enter on the tag URL (example bettingusa.com/tag/djfldksj/.
The site is just taking anything after /tag/ and creating a page based on it. This started a couple weeks ago after a recent MB update.
I used a staging site, deactivated all plugins - which cured the problem. I then started reactivating plugins and the second I activated MB Post Types the error came back, so something is wrong here.
I have 1,000 of these google is trying to index and it's growing by the day, so please act quickly here.