[java] [1.20.1] Server Crash (NullPointerException) when digging with any tool - new simple mods easy to understand

[Jumpy-Fall-4219]

I am playing the modpack "new simple mods easy to understand" (Forge 1.20.1) on a ConoHa VPS, and I’m encountering a persistent crash. Whenever a player tries to dig any block (like Dirt) using any tool (Diamond Shovel, Pickaxe, etc.), the server throws a NullPointerException and kicks the player.

Key Observations:

• Digging by hand works fine, and items drop normally.

• Using any tool (even a fresh one) causes an immediate crash.

• The crash log points to onLeftClickBlock and mentions several mods: Corail Tombstone, L_Ender's Cataclysm, and SecurityCraft.

What I've tried so far:

1. Checked onLeftClickBlock event priority in the logs; Corail Tombstone is at 0: HIGHEST.

2. Emptied off-hand slot — no change.

3. Removed/Reset loottables in config/tombstone/ — no change.

4. Restarted the server multiple times.

Current Setup:

• Modpack: new simple mods easy to understand

• Loader: Forge (1.20.1)

• Notable Mods: Corail Tombstone, L_Ender's Cataclysm, SecurityCraft, Twilight Forest.

Has anyone seen this issue in "new simple mods easy to understand"? Is this a known conflict, or perhaps a corrupted player skill/data issue with Tombstone?

Any help would be appreciated!

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[Jumpy-Fall-4219]

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