iodic

Same here and this is the error:

Fatal error: Uncaught Error: Class 'WebPConvert\Converters\ConverterHelper' not found in /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/classes/TestRun.php:99 Stack trace: #0 /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/classes/Config.php(53): WebPExpress\TestRun::isLocalQualityDetectionWorking() #1 /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/classes/Config.php(168): WebPExpress\Config::getDefaultConfig(false) #2 /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/classes/Config.php(280): WebPExpress\Config::fix(false, true) #3 /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/classes/Config.php(292): WebPExpress\Config::loadConfigAndFix() #4 /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/options/enqueue_scripts.php(29): WebPExpress\Config::getConfigForOptionsPage() #5 /home/ulleval/ in /home/ulleval/web/ullevalkiropraktor.no/public_html/wp-content/plugins/webp-express/lib/classes/TestRun.php on line 99

Running WordPress v5.1.1.

Would really appreciate an update on this issue.

Thanks!
Marko

• This reply was modified 5 years, 11 months ago by iodic.

Hi, just keeping the thread alive — would like to know if this is possible?

Yeah, I have the same problem on one of my client websites… Any word about an update?

I have the same problem with a client’s website. Once the plugin is disabled, the site works fine.

This is the error I found in the logs: PHP Warning: gzencode(): stream error in /usr/home/berkley9/www/htdocs/wp-content/plugins/w3-total-cache/lib/W3/PgCache.php on line 902. I guess it has something to do with Gzip…

A couple of notes:

• The site works if I am logged into WordPress when I access it;
• The site also works (in an Incognito window in Chrome) on my local installation of the same site