[kolla][horizon] Get 503 Service unavailable after set RETRIEVE_PASSWORD.

Hi, Below is the information about this environment. Openstack release: Rocky Kolla container source type: binary OS distro: Ubuntu 18.04 We tried to set OPENSTACK_ENABLE_PASSWORD_RETRIEVE to True in local_settings, but the dashboard got "503 Service Unavailable" after restart the Horizon container. And there's no error log or something in horizon.log Is there anyway to see what's going on? - Eddie