[MC-177236] 20w14a crash because unknown reason

When I open a world that there are many attributes changes from 20w13b to 20w14a (maybe?)

My game crashes and the launcher crashes after the game crash.

But I get the crash report in the version folder.

2020/4/4 update

The world I can't open is in spectator mode yesterday.

I can down grade to 20w13b and change my game mode to creative mode to solve this bug.

And I can use 20w14a to enter my world that I can't enter yesterday.

When I get the item "Shulker Box" and there are full of firework inside it.

It crash again.

And I look at the paper that have lore and name ,it cause crashes.

I think the lore may cause crashes?

I am very not sure about it.

but I can play normally without any items.

Here is the world file (no need to mind the chinese words)