To Reproduce
Put any item into a glowcase:item_display_block and then open the inventory page.

Crash Report
https://pastebin.com/3JFGCjfa

P.S.
Very sorry for reporting an incorrect reproducing procedure in CurseForge, where this issue should actually be a conflict between 3 mods (and I'm not sure which one could fix it).
For my debugging, the game runs well when a group of mods are installed, including Chest Tracker and EasierCrafting. However, it starts to crash after I add Glowcase, which makes me jump to that wrong conclusion without further verification, as at the same time I was having many other issues in my modpack waiting for a check. So sorry again for the previous feedback.

Hey, don't worry about the feedback thing, it's just easier to keep organised with crash logs on here. I've managed to recreate the crash - it occurs when you click a block entity that doesn't have a GUI (such as the item display block, or a chest with a block above it), then open your inventory before opening a tracked block since the game start.