Opening a barrel crashes the game

I was having this issue as well. To add some context, newly placed barrels do NOT crash the game. It is only barrels that were already in the world and had items in their inventory from before this snapshot that crash while opening the game. However once I broke and replaced the barrel that was causing me to crash, it fixed the crash error.

Seems likely to be the same issue as MC-145694; please attach the crash report file here if possible (it should be in .minecraft/crash-reports if you're on Windows, or ~/Library/Application Support/minecraft for MacOS).