problem bones hand left pink

Hi,Does anyone know how to solve the problem of the photo?I have corrects links bones and weights bones too
I do not know what to do…

It looks like your models pinky finger might be part of multiple vertex groups.

hi, I have tried to erase all the vertices except for the small finger.
remains the same, here is a link

You have hidden bone layers where the bones are all over the place for the pinky.

If you need to check how many vertex groups (= bones) a vertex belongs to, selecting it shows the different groups in 3d view properties.