3.1.0 seems to have broken compatibility with lower versions than 1.18.2.
See https://github.com/FabricMC/fabric/issues/2040 for explanation and crash log.
You should remove the 1.18 and 1.18.1 tags on curse so modpack launchers don't pull that version for 1.18/.1 packs.
3.1.0 seems to have broken compatibility with lower versions than 1.18.2. See https://github.com/FabricMC/fabric/issues/2040 for explanation and crash log. You should remove the 1.18 and 1.18.1 tags on curse so modpack launchers don't pull that version for 1.18/.1 packs.