debugging - "This page has no sources" when trying to debug a WebExtension on Firefox -

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i have created first webextension live in firefox add-on marketplace. however, doesn't seem work @ all, though see extension's icon in firefox toolbar.

i tried enable add-on debugging explained here :

enter image description here

and clicking on "debug" link in section corresponding extension: enter image description here

when that, believe called "browser toolbox" opens, nothing in "debugger tab", when reload page extension's content script supposed match.

enter image description here

i tried both firefox , firefox developer edition, on ubuntu.

i tried inspect variables add-on supposed set in "console" tab, none of them defined.

am using correct tool debug extension ?


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