There is no problem when i move left hand, but some of fingers do not move when i move right hand.
Perhaps the solution is weight paint. I do not find which bones have this problem.
here is the.blend file : https://www.dropbox.com/s/52tphkvo7vacui6/2b_09_question.blend?dl=0
here is a video that show the problem: https://youtu.be/Y4uAtzpHC8s