SSLTest project Unable to bind to port

Targets Web
#1

Please excuse my newbie question on the Xojo SSLTest project for Xojo Web.
When I do a run paused, it fires up, but with the Unable to bind error when I start the App from the command line;

MacBook-Pro-Boudewijn:SSLTest.debug bkrijger$ ./SSLTest.debug --secureport=9090
Application is ready
App is shutting down: Unable to bind to port 9090, port is already in use.
Transactions: 0
Traffic Received: 0 b
Traffic Served: 0 b
Total Traffic: 0 b
Average Traffic Per Transaction: 0 b

Can anyone tell me why I’m getting the Unable to Bind error and how to fix this?

Thanks in advance.

#2

That means that the port is in use. Look at your activity viewer and see if a copy of your app is already running.

Also, do you have an SSL certificate in the folder where the app is launching from?

#3