I’m encountering an "INTERNAL ERROR — An error has occurred" message when trying to access a PLPthrough SMT in SuiteCommerce Advanced. This only happens when accessing the PLP page inside SMT. The site itself works fine when browsing normally outside of SMT. Has anyone experienced this before or knows how to debug/fix it?

Do you have errors in the console or in the network tab? There could be an issue with missing CMS contents and/or permissions issues on the CMS/CCT custom records

Yes, there is a 500 (Internal Server Error) in the console, but no other errors. This seems to be the only issue