Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Try to create a custom tab with a ton of items. in my case 486'
2. Click on 'reload and open creative'
3. Crash
4. reload the game and see that the custom tab didn't load
5. wonder why nothing works

Expected behavior
I expected the custom tab to appear like the example pack but instead it crashed

Screenshots
It just says saving world at time of crash

Version

• Minecraft Version: 1.19.2
• Mod loader
  -Fabric
• Mod Loader Version:
• Mod Version: 1.1.0

Additional context
I have a few other mods enabled like REI for instance They can be seen in the crash report. The example pack work with it so it should be fine. The pack that I was using will be attached. I tried remaking the 1.19.3 creative building tab and was going to back port the other tabs but it kept crashing before i could finish this one

Crash Report
https://mclo.gs/SSPj5i9
1.19.3 Building tab.zip

This is the file without errors, so it should load fine: https://paste.firstdarkdev.xyz/inupisidak.json

Hi.

You have a bunch of JSON errors in your file, which is why the game crashes when you reload/load it

You can test it with https://jsonlint.com/

Note to self: Add error handling for files with invalid syntax and display an ingame error instead of having the game crash