PLEASE HELP!!!! MY SITE IS DOWN WITHOUT THE HOME PAGE (TIMELINE)

I was wondering about the php version. On production I use 8.1.24 and on Dev 7.4 and I have no problems at all.

Any page that contain timeline blocks give the error.

I want to upgrade UNA, but this is exactly why I downgraded...

I know the content above is a mouth full lol....but didn't wanted to leave gabs in any analysis what so ever...