Sorry forgot to edit the title

Version Info

• Minecraft, 1.16.5
• Trash Cans, trashcans-1.0.10-mc1.16.5.jar

Steps to Reproduce
A player mined a trash can with an Ars Nouveau spell

"ars nouveau, so it was a custom spell
touch+break+pickup"

Crash report (~/logs/latest.log)
https://pastebin.com/raw/Lwu3ge5E

I fixed it now in Core Lib version 1.0.10.

Thank you for the reporting the issue!