I'm trying to update my server I run for me and my friends and the only real mod I have is this one. I was able to update my server and it runs np, but everything from the mod is deleted. I can't craft them either. The only thing I'm capable of is /give the items but the items do not drop upon breaking. They do seem to have their functionality, but I am seeing barrier blocks appear in my systems can't grab them though.

Upon joining the server for the first time, the console spits out
Invalid statistic in .\world\stats\3d0d4fdf-570d-4abf-8b2d-04c53610859e.json: Don't know what toms_storage:ts.inventory_cable_connector is

And

Tried to load unrecognized recipe: toms_storage:trim removed now.

And it did think for every recipe and item deleting them from my world and don't have access to them without cheating

Yeah it also doesn't even let you pair the advanced wireless terminal to your system. I updated my pre-existing world but can't re-pair it. Now i have to go to my storage system to use it :( First World Problems, huh?

The 1.21 version is a major rewrite, so the block ids, and their functions changed. (There won't be a filtered inventory cable connector, the regular connector will have filtering, all of the painted blocks work completly differently on fabric, removing many duplicate blocks).
I released a patch for the recipe and terminal issue.
Duplicate of #380 and #382