Admin console is not loading in keycloak production environment

I am trying to install keycloak in production environment. using .tar.gz file
Below is the configuration but it shows blank admin white page and I am also not using any proxy as such
KEYCLOAK_ADMIN=admin
KEYCLOAK_ADMIN_PASSWORD=password
KC_LOG_FILE=/var/log/keycloak.log
KC_HTTPS_PORT=8443