Strange Error for Find Full Text feature

Hello! I’m a librarian, and a requestor is having trouble with their EndNote X8 Find Full Text feature. Whenever she attempts to use it she runs into this scripting error (URL redacted):

“An Error has occurred in the script on this page.”
** Link: 0 **
**Char: 0 **
**Error: Script Error. **
**Code: 0 URL **
URL: [bizarre googletagmanager URL]

We’re especially confused by the google tag manager URL.

I know universities have individualized authentication codes for finding full text, but this doesn’t appear to be the issue (we triple checked all of her settings, and they match all of mine on EndNote 20, which should still work for X8). Any ideas what this could be?

Any insight would be much appreciated!