Issue 502 Bad Gateway

[Jmz]

Moin, i have a problem and i run a docker container under Plesk and it will run without expecting anything and without anything being changed by the system or the domain, now a 502bad gateway will be output. how can i access this container even if only rudimentarily despite this problem? on the port i tried shcon with ip and hostdomain. please help me urgently. i already took a snapshot as a precaution. thank you very much and greetings from the förde