Answer by Thomas for Failed to bind to address (already in use) error with Visual Studio Mac API

I understand OP face this issue in Mac. I have faced similar issue from my local Windows machine some time back and took some time to figure out the issue is. Hence adding the quick solution for windows users.

If you are using windows machine, Then probably quick solution is to Kill the process which is blocking this process or restart your machine.

Identify the Process Using the Port -

netstat -ano | findstr :5050

Terminate the Process -

taskkill /PID <PID> /F

eg :- If netstat -ano | findstr :5050 shows a PID of 1090:

taskkill /PID 1090/F

Run netstat -ano | findstr :5050 again to ensure the port is no longer in use.