“unknown error” in Google PageSpeed Insight test

Since the past weeks users have started to complain that Google PageSpeed Insights displays the following error when the plugin is enabled:

An error occurred while fetching or analyzing the page.

The issue started recently and is related to the use of the HTML5 script loader + little-loader option in the Above The Fold Optimization plugin.

The HTML5 script loader has been working stable on 20,000 websites for over 6 months without a single complaint and some of my old clients, such as insurance companies, have dedicated website teams that look at every tiny detail of the website and every little aspect that doesn’t work ‘perfect’ for any of their potential high value customers is discovered and fixed. They have been using the HTML5 script loader for 6 months.

The issue is clearly with Google PageSpeed Insights. The Google PageSpeed Insight test worked consistently well before. The error started to occur suddenly. The Above The Fold plugin hasn’t been updated for 6 months so it can’t be the reason.

We have no idea what the cause could be. The https://www.GTMetrix.com test works fine for example. I would expect that the official test from Google is more robust than the GTMetrix test. And even more so, if there is a technical issue, that Google would inform the website owner with a quality service message instead of “unknown error“. It’s not to be expected that Google would not foresee a technical issue and report to their customers “we don’t know what to do“.

The 20,000 people who use the Above The Fold Optimization plugin use Google PageSpeed Insights intensively. They are the main customers for the test, website owners with passion for website performance / Google PageSpeed compliance.

We are investigating the issue but it appears that the cause is not related to the HTML5 script loader that works reliable and stable in all browsers, including Internet Explorer 8.

If you have any feedback or questions related to the issue, our team can be reached at [email protected].

• This topic was modified 7 years, 4 months ago by optimalisatie.