Minecraft 1.17 ''Incompatible'' behavior and resources non-sense bug

Yeah, so, the bug is basically a ''Incompatible'' pop-up message as title and there is no description. Please fix this, its been 1 year i don't play Minecraft. Its self-explanatory but it may be really a bug and i know there is nothing wrong with my Minecraft and add-ons. Fix this i wanna play it so much. Idk if this bug was on other Minecraft versions but i think this one is.

Also, i wasn't having this bug on 1.15.2 so it is more likely a 1.17 bug ** 

Sorry for my bad english