dab246
27 lines
1.1 KiB
Markdown
27 lines
1.1 KiB
Markdown
# 42. Fix error `Failed to execute 'subscribe' on 'PushManager': Subscription failed - no active Service Worker` when get token on web
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Date: 2024-04-02
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## Status
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- Issues:
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- https://github.com/firebase/firebase-js-sdk/issues/7575
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- https://github.com/firebase/firebase-js-sdk/issues/7693
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## Context
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- Sometimes calling messaging `FirebaseMessaging.onMessage.getToken()` returns the error `Failed to execute 'subscribe' on 'PushManager': Subscription failed - no active Service Worker`.
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- It seems to occur on the first page load and clear storage with unregister service worker, when the user refreshes the notifications work and there's no error anymore.
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## Decision
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- There is currently no official solution from the [Firebase](https://github.com/firebase/firebase-js-sdk) team.
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- So we will use the following workaround:
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- If `FirebaseMessaging.onMessage.getToken()` throw `DomException` then call again get token.
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- Try again 3 times with `FirebaseMessaging.onMessage.getToken()`
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## Consequences
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- We got the token right after trying again.
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- Receiving new messages on `foreground` and `background` works fine.
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