Hello, I am running the first example extensions-getting-started
The error I get in the console is
Stream init failed: DOMException: Failed to execute ‘postMessage’ on ‘Window’: Invalid target origin ‘’ in a call to ‘postMessage’.
Could somebody help me?
This error is irrelevant to extension development
It’s a security error relating to the player testing if it’s in an iframe or not and can be ignored
I will delete the question then, so it’s not spamming the forum with irrlevant stuff
It’s fine to leave it.
Other people often have the question.
It’s just not something you yourself can fix and it’s not really a “bug”