WHY? Only one event gives a fatal error

can you share the codes you are using for us to see and analyze please?

I’m using the default Events Manager plugin, nothing has been changed. Do you want a login? Or just the code from that single-event.php page?

This looks like a theme issue or a problem with your custom single-event.php file.

If you test with the default WordPress theme does the event load correctly?

If it does, can you paste the code you’re using for the single-event.php template? As per forum rules, please use a service like pastebin if the code is more than a few lines long.

https://pastebin.com/vYNVYnmB

it seems that you did not properly initialize $EM_event – you can try this similar link -> https://www.ads-software.com/support/topic/events-manager-eventslocation-pages-cant-get-sidebar?replies=21