Repair dropped stitches on an already completed project

I’m making fingerless gloves. I had completed the seams putting the two sides together but when I slipped it on my hand there was this gap. It appears that I missed a stitch and it dropped off when I was binding off. I’ve seamed all the sides together. Do I need to unravel the piece in order to address the stitches back in or is there a way to fix this? Thank you for your time and your help.

I think I would put a crochet hook in the loop and take it up as far as you can. Then take a piece of matching yarn and weave the ends in to secure it where it is. That usually works.

Thank you. I did just that after s4nding this message