I had a major crash after placing an item shelf in my world. Here is the report.
crash-2022-01-24_19.47.38-server.txt
I had to remove mod to re-enter the world.

Looks like you are running different versions for the server and client, make sure both are the latest version (20220123a)

Okay, I see. After starting a brand new world the item shelf doesn't cause a crash. Thanks! This is happening in my creative planning world that I've been using for a while. Pardon my ignorance, but is there any way to update the version or should I just avoid placing the shelf in this world?

Are you crashing in Singleplayer?

If it makes any difference I am using the curseforge app to launch the game.

Yes

That's super odd because in the report it makes reference to both "buildersaddition-1.18-20211208a.jar" and "buildersaddition-1.18.1-20220123a.jar" and I've never seen that before.

Fixed in 20220308a.