Stack - Deployment Error: A stack with the name is already running

Hi there,

i just wanted to create the nginx-proxy-manager with “create stack” in the Portainer web-editor mode, where the following error is displayed:

Deployment Error: A stack with the name "nginx" is already running.

When i look at the overview, there is no stack called “nginx” or container called “nginx” running.

Can someone tell me how i can remove the nonexistent stack so that i can deploy it under the name “nginx”.

Thanks in advance!
Christoph

(Unfortunately it is not possible for me to post a screenshot because i am a newly registered user.)