You have to not to use a service worker for a background script (at least not for debugging). Use this: "background": { "scripts": ["background.js"], "persistent": false } instead of this: "background": { "service_worker": "background.js" }

Do not use service worker, at least not for debugging. Modify manigest and use this: "background": { "scripts": ["background.js"], "persistent": false } instead of this: "background": { "service_worker": "background.js" }

Do not use service worker, at least not for debugging. Modify manigest and use this: "background": { "scripts": ["background.js"], "persistent": false } instead of this: "background": { "service_worker": "background.js" }