When you say "Desktop Client", I assume you are referring to the Symphony Desktop Application (SDA).
I suspect that you don't see it loading because SDA does not trust the self-signed certificate served on your local instance. Similar to how you initially got past the security warning on your browser, you need to do the same within SDA. To do that, you can open developer tools (Ctrl
+ Shift
+ I
) then use window.location.href = https://localhost:4000/
just to clear the security warning, then head back to the sandbox pod again with window.location.href = https://develop2.symphony.com
.
You can also use the console and network tabs in the developer tools to debug any issues with your extension app. Probably easier to do this within your browser for the majority part of your development cycle and then test in SDA once you're done.