The game crashed: unexpected error Error: java.lang.NoClassDefFoundError: net/brdle/collectorsreap/common/effect/CREffects

[MayDay42]

So, anytime I boot up the game and load into a world. The game will allow me to walk around for a few seconds and when I try to open up a menu it crashes. Then I get the error game crashed, which says..

"The game crashed: unexpected error Error: java.lang.NoClassDefFoundError: net/brdle/collectorsreap/common/effect/CREffects

This crash may be caused by an out-of-date graphics driver or conflicts with screen recording software. Please ensure your graphics driver is up-to-date and disable or uninstall any screen recording software in use."

Exit Code: -1073740791

My graphics card is up-to-date and i have no recording software installed.

Crash Report: https://paste.ee/p/mOJxagEY

[MayDay42]

What's even weirder is that when I make a new world, its fine for about an hour or so before it crashes. Then I can't load that world again without it crashing

 

Update: I found out that it seems to only happen when I am in creative or try to switch to creative

Edited 2 hours ago by MayDay42