Ghost member portal not working

Hi all. I have fresh install ghost using bitnami in gcp. At this time, member portal setting wonderfully. But, when i after setup domain and ssl, member portal is not working. I can enable it from the admin menu but the customization page show white blank page. Anyone has the same problem with me? How could you solve that? Thanks

Gonna close this in favor of the duplicate containing a screen shot :slight_smile: