Another process might already be using port 11501. Kill that process or change the port.
Clicking that link opens the local web application. localhost11501 link
: Some software development tools and frameworks automatically start a local server on a non-standard port (like 11501) when you run a project locally. Another process might already be using port 11501
The localhost11501 link is more than a string in your address bar—it is a snapshot of your development environment. It tells you what port a server is using, hints at why a default port was skipped, and directs you to where your code is actually running. When setting up OAuth (sign in with Google, GitHub, etc
When setting up OAuth (sign in with Google, GitHub, etc.), you must register a redirect URI. Developers often use http://localhost:11501/auth/callback during testing. If you see this link, you are likely debugging an authentication flow.
Then http://localhost:11501 will map to port 80 inside the container.
Many modern front-end frameworks (React, Vue, Svelte, Angular) start a hot-reload dev server on a random high port. Examples: