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@yuki777

PWAでFCMプッシュ通知のためのトークンが取得できないときはfirebase-messaging-sw.jsを確認する

Posted at

現象

  • PWAアプリでFCMプッシュ通知のためのtokenが取得できない
  • エラーメッセージが出力されている

エラーメッセージ

A bad HTTP response code (404) was received when fetching the script.

An error occurred while retrieving token.
FirebaseError: Messaging: We are unable to register the default service worker.
Failed to register a ServiceWorker: A bad HTTP response code (404) was received when fetching the script.
(messaging/failed-service-worker-registration).

原因

  • firebaseでpush通知するために必要なfirebase-messaging-sw.jsが存在しなかった
  • 環境移行中に404になってしまったっぽい
  • 解決してしまえばQiitaに書くほどのことじゃないんだけどねぇ
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