I have the same mods and mod versions as a friend, I even imported his exported profile on Curseforge and it self says mismatch, not sure what's happening.
#KubeJS doesn't match itself
low plume
tardy loomBOT
Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!
tribal pantherBOT
Forge is not the smartest. The criteria it judges 'version differences' on is not just the version number, but also what registry objects (like items and blocks) exist.
This means that when you add custom things with KubeJS, Forge can sometimes show a version mismatch error with the exact same versions shown on both sides.
The simple solution for this is to make sure that the startup_scripts folder is the same on client and server.
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Thanks