# Strange serviceworker.getregistrations error in the logs

**URL:** https://meta.discourse.org/t/strange-serviceworker-getregistrations-error-in-the-logs/111360
**Category:** Support
**Created:** [March 12, 2019, 9:31am UTC](https://meta.discourse.org/t/strange-serviceworker-getregistrations-error-in-the-logs/111360 "2019-03-12T09:31:23Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Stranik](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/stranik/32/85638_2.png) [@Stranik](https://meta.discourse.org/u/Stranik)
#### Post date: [March 12, 2019, 9:31am UTC](https://meta.discourse.org/t/strange-serviceworker-getregistrations-error-in-the-logs/111360/1 "2019-03-12T09:31:23Z")

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```plaintext
TypeError: navigator.serviceWorker.getRegistrations is not a function

```

 ![2](https://global.discourse-cdn.com/meta/original/3X/f/0/f03ec2a67349c0cdb89643e54103cb053fe36e29.jpeg)

> <https://github.com/discourse/discourse/blob/f9648de8972dea4661e75b3f25bfeb1535e9c6c4/app/assets/javascripts/discourse/initializers/register-service-worker.js.es6#L15>

This is considered an error, or should not pay attention to this warning.

v2.3.0.beta4

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### Author: ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam)
#### Post date: [March 12, 2019, 9:59am UTC](https://meta.discourse.org/t/strange-serviceworker-getregistrations-error-in-the-logs/111360/2 "2019-03-12T09:59:35Z")

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What browser is this? Looks like an old one to me that only implements partial apis.

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<div class="post-metadata">

### Author: ![Stranik](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/stranik/32/85638_2.png) [@Stranik](https://meta.discourse.org/u/Stranik)
#### Post date: [March 12, 2019, 10:10am UTC](https://meta.discourse.org/t/strange-serviceworker-getregistrations-error-in-the-logs/111360/3 "2019-03-12T10:10:54Z")

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> [@sam](#):
>
> What browser is this?

I dont know. This error began to appear in the logs. Maybe someone uses an old browser. The topic can be closed, the reason is clear.

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### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [March 12, 2019, 11:49am UTC](https://meta.discourse.org/t/strange-serviceworker-getregistrations-error-in-the-logs/111360/4 "2019-03-12T11:49:15Z")

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