Sent by the DevTools service worker to the DevTools panel when it has failed
to send a message to the inspected page as there is no receiving end present.
This normally means the content script has not been loaded due to the user
not having granted permission for the script to run.
Sent by the DevTools service worker to the DevTools panel when it has failed to send a message to the inspected page as there is no receiving end present.
This normally means the content script has not been loaded due to the user not having granted permission for the script to run.