I want to build mobile twitch extension

I build mobile twitch extension, when I local test my extension in android but it always loading. The mobile.html just simple render hello world, like the following screen

Use the same HTML in a panel
And test the panel on the Twitch Website
This will give you access to the console logs

I have tried to display it on the website, the website can be displayed correctly, but I can see error message in the console. It is Failed to execute ‘postMessage’ on ‘DOMWindow’: The target origin provided (‘https://supervisor.ext-twitch.tv’) does not match the recipient window’s origin (‘https://www.twitch.tv’).

That message is irrelevant.

So the extension works as expected when testing in a panel?

I can successfully display the content of the extension on my phone

Thank you for your reply