My one airpod is not charging in the case is there any way i can fix this if not why is this happening

Hello~Any help here by clicking on below?

If your left or right AirPod isn't working - Apple Support*

Note that inside the link you may click on other highlighted tabs to view other helpful information such as...

*If you see any debris, clean your AirPods using the guidelines in this article, and see if that fixes the issue. Post back if needed and take care.

~Katana-San~