FAQ

• Yes, my issue is not about variability or throttling.
• Yes, my issue is not about a specific accessibility audit (file with axe-core instead).
• Yes, my issue is not answered by other FAQs.

URL

https://documentation.espressif.com/en/documentList?eol=false

What happened?

Hi Support,

We use PSI API V5 to periodically check the loading speed of our pages. It has been working fine till around 4:00 am, 2026-01-20 (Beijing time).

Since then, all API calls just return an error code of 500, saying "Lighthouse returned error: Something went wrong".

What did you expect?

Each API run should return the correct response.

What have you tried?

To test if this issue is with our pages or with PSI API:

1. I tested some pages from sites of other companies randomly.
   • Some pages also got the same error code, such as https://docs.nordicsemi.com
   • But some pages got correct response, such as www.google.com.
2. I checked with our IT, which confirmed they didn't change any configuration on our side.
3. I have run tests both via API call and on https://pagespeed.web.dev/. The result is consistent. By consistent, i mean, those pages that returned error code 500 via API call also got opps on https://pagespeed.web.dev/.

How were you running Lighthouse?

PageSpeed Insights

Lighthouse Version

v5

Chrome Version

143.0.7499.193

Node Version

No response

OS

Mac

Relevant log output

{
  "error": {
    "code": 500,
    "message": "Lighthouse returned error: Something went wrong.",
    "errors": [
      {
        "message": "Lighthouse returned error: Something went wrong.",
        "domain": "lighthouse",
        "reason": "lighthouseError"
      }
    ]
  }
}