Newbie on Docker

Hi to all looking for guidance.
I install docker on open media vault that is running on raspberry PI, i run portainer to install different app.
I trying installing nginx whit no luck. Thank i install nextcloud, it work fine.
When i was messing whit nginx i decided to erase nginx and nextcloud, just because.
Now if i try to reinstall nextcloud whit stack i get the Db and nextcloud but the nextcloud app it stay on created state. And nextcloud does not run. is the same stack file that run whit no problem.
what am i doing wrong. Im also running other apps and there are no problems yet there.

Thank you