Accessing my own group return 500 error

I am using for my project. I have 2 groups but suddenly, when I am trying to access one of the group. I got the following result

# 500

### Whoops, something went wrong on our end.


Try refreshing the page, or going back and attempting the action again.

Please contact your GitLab administrator if this problem persists.

But I can access another group normally. Also, if I login with another account to that group, there is no issue.