Kubesphere nginx wordpress bad gateway 502 issue

i am using kubesphere, and have installed a wordpress nginx php-fpm docker container. with a mariadb container. containers are working . but currently i'm not to access my wordpress bad gateway 502. this is the container that i installed: wordpress:php8.0-fpm-alpine this is the link: [login to view URL] only people with experience in this topic will be accepted. Thank you,