FCP X 10.5.3 crashes when trying to share

What's up with FCP X 10.5.3 crashing when I try to share a timeline, a clip, a compound clip - anything. I love FCP and have always edited with it. it is the best, cause it's the fastest

Anyway, I edit primarily high-end commercials and had to do a screen recording and trim in Quicktime to get 2 WIP cuts out yesterday!!!

I'm on Big Sur
MacBook Pro 2017
16GB
just all the stuff that makes my MacBook more than powerful


This only started happening since the weekend update of Final Cut

Set the language to English and the region to US and reboot. See if that fixes it. 

thank you Tom

Mine was set at English and the USA
so I changed the country and kept the language English rebooted
changed the country to USA and made it English again and it worked
many thanks