Editor Containers not showing up in experience manager

Hello, I have a problem regarding the experience manager in BrXM. After setting up a react based SPA frontend, the editor containers disappear. It’s the ones used for adding components to the page in the experience manager. Also the page and container button in the top left disappear.

I get the following error in browser window:

Ther is no channel detected in the page metadata

I’ve followed steps:
Setting root properties:

and setting the channelinfo

This configuration seems correct. Perhaps something here can help: