Can't see the Extension Coordinator Run list in local mode

Not quite running yarn start -l manifest.json. Am instead running: yarn start -l ../my-extension/manifest.json because the manifest is in my extension folder. Could this cause problems?

Yes am running yarn host -d ../my-extension/public -p 8080.

The content of the iframe is there, if i manually remove the display: hidden; inline css using the chrome element inspector.

Here’s my manifest. I tried generating it using yarn create-manifest, but it didn’t seem to actually create a file. It only echoed a bunch of json to the terminal (which i then copy and pasted and manually made the manifest file.)

I’m running the hello-world example, but double checked and <script src="https://extension-files.twitch.tv/helper/v1/twitch-ext.min.js"></script> is defo included on each page.

So do you not develop extensions ? or have you just got another way to build them?