Hello,
Today I encountered a problem I've never had before with MSFS2024 on the latest version of the CRJ.

Do you have any idea what might be causing this?

This is called a WASM crash and it is absolutely the biggest bugaboo in complex addons for flight simulator.  They happen at random times, they cannot be readily duplicated and their causes are all over the place.  If you restart that same flight, you are unlikely to run into it again.  About the ONLY thing you can do is find the WASM folder in your sim install and delete the aircrafts WASM files (all the files in the folder but NOT the "work" folder).  Whether this "works" or helps or does anything at all is a mystery, wrapped in an enigma boxed in a riddle.  

Thanks.