SlaveToHeaven

Recently Ive been facing an issue where my console outputs a "Failed to parse resource pack prompt" error then says something about use Jsonreadon.setLenient(true) to read malformed json ;-; I cant find any fix on the internet for it and unfortunately it is not minehuts expertise to know what any of that means so they cant help... if there is already a fix for it and im just missing something important please link it but if there is nothing can someone please help me?