Events not populating calendar

Client contacted me advising the calendar was blank despite many events being input. They knew the calendar was populated 5 days ago. I restored a backup to the site, and the events returned.

Today they advised that only December was listed and that they cannot move between months. I suspected that it might be an issue with outdated Events Calendar plugins – as they had conflicted with Beaver builder nearly a year ago.

I created another backup and updated all of the plugins. The calendar remains empty but can move to other months now.

I deactivated ALL plugins except Events Calendar plugins, and still, the calendar is empty of events. I reactivated things.

When looking at the troubleshooting page of the calendar I see several instances of: 2023-12-06 15:56:41 Invalid instance of a recurring event was requested (incorrect slug) redirecting to https://www.visitwabashcounty.com/event/karaoke-950-speakeasy/all/ warning Tribe__Events__Pro__Main::detect_recurrence_redirect

Please help me to get all of the events to show properly in the calendar.

Thank you

The page I need help with: [log in to see the link]