the mod doesnt work with a mod called lithium

This issue is caused by a mixin conflict with EntityMixin.

any chance for this to get fixed?

there's a lithium override that you can do to fix this (look in your lithium config, a file named lithium.properties, and add the line:)
mixin.entity.collisions.movement=false

This issue is caused by a mixin conflict with EntityMixin.

when launching from 1.18.2, it crashes and in the crash report it says something about gravitychanger.mixins.json:EntityMixin, do you know if there is a way to stop this crash by doing something similar to the lithium thingy

This issue is caused by a mixin conflict with EntityMixin.

when launching from 1.18.2, it crashes and in the crash report it says something about gravitychanger.mixins.json:EntityMixin, do you know if there is a way to stop this crash by doing something similar to the lithium thingy

the mod does not work in 1.18.2 alone, unless you're using the fork that ports it to 1.18.2