This document will describe the "Sorry, there was a problem" error, when you might see it, and what you should do if you encounter it.
This error is typically an indication that you are logging in to WiscWeb at the wrong location.
It is most commonly seen when users try logging in to their site URL rather than the true login link. Example: https://yoursitename.wiscweb.wisc.edu/wp-admin
However, this error can also appear when attempting to use WordPress's native password protection option at the page or post level. For more information, review: WiscWeb - WordPress UW Theme - Password Protection for Pages Not Working
Make sure you are logging in at https://wiscweb.wisc.edu/wp-admin.
If attempting to use WordPress's password protection feature, consider using other protection options for your content: WiscWeb - WordPress UW Theme - Options for Protecting Pages