Error 500 when deleting and editing events

Hello,
I’ve been having an issue with The Events Calendar when trying to delete or edit events from earlier this year, January events return error 500 whenever I try to edit or delete them.
When I delete them, though, they are succesfully moved to the Trash after the error 500 but editing isn’t applied after the error.
In case it’s of any use to find the problem I’m using a snippet to redirect events from the calendar pagedirectly to the link of the event.
https://theeventscalendar.com/knowledgebase/make-links-event-go-straight-event-website/