bruh my curseforge is buggin and i need help

i try to launch minecraft and it says `"unable to copy file, error details: acces denied,  filename on disk: README.txt, exists: nonexistant" i have no idea of whats happening it worked just fine about 2 weeks ago and now it just decided to stop working. ive been searching for a fix but no one seems to have had this same issue please help me.