Describe the bug you're experiencing

After creating a new world, close and save the world, close the game, and again open the game and try to join in the world the game will crash.
Note: This only happened to me the first time I tried to rejoin the world, the second time everything was fine.

Reproducability

Create a new world, open the newbie gear bag, save and close the world, close the game, reopen the game and try to join the created world.

Mod up to date

• Before submitting this issue I updated to the newest version and reproduced it

Tested Without Custom Mine and Slash Datapacks

• In case I used Mine and Slash datapacks, I ran Mine and Slash in a new instance without custom datapacks and confirmed the bug still exists

Mine and Slash version

6.2.2

Logs

https://gist.github.com/germanchuu/300f020e96aa37e8a16fcd1ec35c5859

Can confirm I am getting the same issue when entering a world, crashlog - https://pastebin.com/VfUPjNZp