The site says that the mod is compatible with 1.17 and 1.17.1, however this is not the case...

I listed the mod with 1.17 because a lot of people click 1.17 when they filter mods on Curse, iirc it wouldn't find 1.17.1 mods if you did it like that.

The fix will be out in a future version as this is really trivial. If you really need it to launch in 1.17, open the jar and change fabric.mod.json to have

    "minecraft": "1.17.x"

instead of "1.17.1".

Either way, you should be using 1.17.1.