[Forge 1.20.1] Ticking player crash if CWSM is installed, mod fails to check to see if the result of ItemStack#getTag is null

[pinkygrocket]

Issue #2267 on CWSM issue tracker.

If both Good Ending and Cracker's Wither Storm Mod are installed, Good Ending will cause a ticking entity crash if the player has a Command Block Sword in their inventory. According to Crackers (the developer of CWSM), the crash is caused due to the value of ItemStack#getTag returning null, which Good Ending does not check for.

Pastebin of the issue from CWSM's issue tracker.