[Neoforge 1.21.1] Mod comes bundled with older versions of Flywheel and Ponder, overwrites newer versions bundled with more updated mods, causes game to not startup.

[JoaoPedroPiotroski]

Example:

If anyone else has the same issue, a quick band-aid is going into the jar as a zip, going to META-INF\jarjar\ and deleting everything inside the folder, doesn't seem to cause any issues as long as you actually have something like Create with the newer versions of these mods