How to custom navbar template in lms by create new file custom (inherit)

Hello everyone , I re-run a new course and I listed all my course in table, I want to go to gradebook of a specific course , everything is ok until I see this issue

Is there any ideal to slove this issue, I try to inherit or override in template header but I don’t know how to override it, another way is refresh or update cache.

Please help me, I’m using lilac version