Character model thinks i have an extra bone

As far as i can tell iv done everything right but its saying i have one extra bone, i havent edited the armature at all and even when i redo the armature and weight painting it says i have to many bones. Iv managed one time to get it to work but then it turned into a purple stretched mess.

Google drive file

Never mind i got it fixed with some finagling.

Hello! i’m new to the modeling! How did u solve this problem? I am having the same issue. Thank you!