I created a Chest then placed it down and tried to open it. That's when the game crashed. See the attached crash report and please notify me when it is repaired so I can update my version. I was playing the 1.20.1-5.1.2 version on a 1.20.2 game because the mod hasn't been updated to 1.20.2 yet but it loaded fine.
Thanks for this mod Jessica. I really don't want to play Minecraft without it.

crash-2023-11-12_12.40.40-server CompactStorage Fault.txt

Also crashes when opening Backpacks. See attached crash report.

crash-2023-11-12_13.15.06-server CompactStorage Backpack Fault.txt

This is because the class being used there has been moved, the mod needs updating for that version of the game. Currently in progress with a generic update to both the Fabric and Forge versions :)