Got to know about this issue from client server.
If anyone on CyberPanel is using Docker and they have also installed CSF. Then I am experiencing various problems.
I’ve installed csf and enabled docker support in csf configurations.
Then I created docker app from CyberPanel, but keep getting 503 error. It turns out that if i remove csf, remove and re-install docker then apps start working.
I’ve seen couple of posts on reddit, stackoverflow having similar problems.
If you want to remove and re-install Docker, read this guide: Debugging Docker Apps Features – Knowledge Base
This is a devloping story as I’ve contacted csf support…