: Another application may be using the port. You can check which service is bound to it by running netstat -ano | findstr :11501 in a Windows Command Prompt or lsof -i :11501 on macOS/Linux.
In technical terms, refers to the computer you are currently using. When a port number like 11501 is attached, it identifies a specific "door" or communication channel on that computer used by a program. The label "exclusive" likely indicates that this specific channel is reserved for a single service or restricted from external network traffic to ensure security or performance. The Story of the Private Workshop
Using port 11501 keeps the traffic exclusive. It ensures that an app won't crash due to port conflicts caused by everyday development tools or routine background tasks.