Pups::ExecError: su postgres -c 'psql discourse -c "alter schema public owner to discourse;"' mislukt met retourwaarde

[Ratnam_Raju_Varsala]

I used following slack
GitHub - discourse/discourse_docker: A Docker image for Discourse /var/discoursed
Operating System - ubuntu 20.04 LTS
Server - 8GB RAM 30GB

Thanks & Regards