GoogleChrome / GoogleChrome/lighthouse

Lighthouse returns "error: PAGE_HUNG" or hangs on pages which previously worked

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#13,384 3 comments 0 reactions 1 assignee Claimed by @paulirish View on GitHub
bug needs-investigation P1.5 PSI/LR
Dominant language
JavaScript
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Description

### FAQ

- [X] Yes, my issue is not about [variability](https://github.com/GoogleChrome/lighthouse/blob/master/docs/variability.md) or [throttling](https://github.com/GoogleChrome/lighthouse/blob/master/docs/throttling.md).
- [X] Yes, my issue is not about a specific accessibility audit (file with [axe-core](https://github.com/dequelabs/axe-core) instead).

### URL

https://www.zacks.com/

### What happened?

Lighthouse/Pagespeed returns the message "error: PAGE_HUNG" or hangs on "Running performance analysis"

![lighthouse page hung](https://user-images.githubusercontent.com/4165155/142068501-57007d1d-8b45-4092-bd8f-7f43e106a8ed.png)

### What did you expect?

Expected to see web vitals report

### What have you tried?

We have been using PageSpeed Insights/Lighthouse for approximately a year to benchmark our site, with no issues. Yesterday, it seems there was an update released, now this tool either returns the message "error: PAGE_HUNG" or hangs on "Running performance analysis"

We have tried removing various components from our site to isolate the issue. We discovered that removing "SwiperJS" [https://swiperjs.com] component from the page allows PageSpeed to complete successfully. Please note, this component was on our site before the Lighthouse update and didn't cause any issue previously.

### How were you running Lighthouse?

PageSpeed Insights

### Lighthouse Version

v9.0.0 [PageSpeed Insights]

### Chrome Version

_No response_

### Node Version

_No response_

### OS

_No response_

### Relevant log output

_No response_

Contributor guide

Open the contributing guide

Assessment

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