Open in Browser Issue!

[adam5G]

Hi Guys,
I am new to wappler. I am following Hyperbytes quick tour of wappler and somehow I am unable to view what I have developed so far in wappler. When clicking on “Open in Browser” button I see a blank page only. When switching from terminal to Local Web Server I see the following message

appreciate your response! Thanks

[ChristopheA]

@adam5G The error says the port 8080 is already in use.
Have you tried to edit the project to change the port to something else? 8880 for example…
Have you also checked the Developer tools in your browser to see if something is loaded and if there is any error? (Right click + click on inspect)

[Hyperbytes]

If using the Wappler inbuilt node server it defaults to port 3000
Are you sure the port has not been changed in the settings?

[Alexander_Paladines]

Like @ChristopheA say, the port is already in use.

Check if other services like XAMPP or MAMP depending of your OS or Docker have the web service started, if that the case just stop that service.
If Windows 11 you can check which program is the responsible to keep open that port:

• Open terminal or powershell in windows.
• type netstat -a -o -n, this will show all active connections with TCP port in use:
  
  
• Observe the PID column of the desired TCP port in use, will be neccesary to locate the program resposible of that port in use.
• Open Task Manager in Windows (Ctrl+Shift+Esc).
• Select “Details” Tab and in PID column search by the PID number founded before in terminal:
  
  
  
  In my example I see that port 8100 with PID 26152 finded in terminal is in use by Docker, now you can open the responsible app and stop the service or End Task inside Task Manager with a right clic.