Minecraft crashed when I tried to set waypoint in VoxelMap.

I'm going to close this due to complete disregard of issue guidelines.

I'll reopen in when you provided things like CrashReport, modlist, etc.

Sorry, I thought I did it.
mods: https://imgur.com/a/gozGLNC
crash report: https://pastebin.com/yERuYzwD

Crash is caused by a conflict of Optifine and Voxelmap from the look of it, you may have to remove one of those two.

Journeymap is a very good map mod and could serve you as a replacement for Voxel.
Optifine on the other hand will probably cause you more problems with IE's rendering in the future, so removing that is just as well of an option.

Journeymap is a very good map mod

IDK why but when I played modpacks with it, minimap was loading very slow.