Title: Error worker failed
Last modified: May 9, 2024

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# Error worker failed

 *  Resolved [Tilo](https://wordpress.org/support/users/netsales/)
 * (@netsales)
 * [2 years, 1 month ago](https://wordpress.org/support/topic/error-worker-failed/)
 * Hello,
 * I use the DIVI Theme without a Caching Plugin.
 * The PDF viewer brings the error message
   Setting up fake worker failed: “Cannot
   load script at: [https://kuhstall-kleinwalsertal.at/wp-content/plugins/pdf-embedder/assets/js/pdfjs/pdf.min.js,qver=2.2.228.pagespeed.ce.JWXIrGgm2e.worker.js&#8221](https://kuhstall-kleinwalsertal.at/wp-content/plugins/pdf-embedder/assets/js/pdfjs/pdf.min.js,qver=2.2.228.pagespeed.ce.JWXIrGgm2e.worker.js&#8221);.
 * What can I do?
 * Thanks…
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-worker-failed%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 5 replies - 1 through 5 (of 5 total)

 *  [Nukak Asanansi](https://wordpress.org/support/users/nasanansi/)
 * (@nasanansi)
 * [2 years, 1 month ago](https://wordpress.org/support/topic/error-worker-failed/#post-17745014)
 * Hi [@netsales](https://wordpress.org/support/users/netsales/),
 * Thanks for reaching out.
 * The error you shared (_Setting up fake worker failed_) is usually caused by caching
   and optimization tools on your site.
 * While you may not have any active caching plugins, kindly know that Divi includes
   many features to make your website faster by delaying the loading of unnecessary
   resources and storing requests in a cache.
 * These could also create issues with the plugin’s function and generate the error
   you are getting.
 * To rectify this, you’ll have to exclude the plugin scripts from caching. Since
   the plugin scripts are already minified, excluding them will not affect efficiency
   or load speed.
 * Be sure to flush any caches after you exclude the scripts so that the site can
   load them again, and the embed viewer should be displayed correctly once this
   has been done.
 * You can learn more about this in our Knowledge Base article [here](https://wp-pdf.com/kb/#:~:text=Setting%20up%20fake%20worker%20failed%20Error%20on%20update).
 * I hope this helps! Thanks 🙂
 *  Thread Starter [Tilo](https://wordpress.org/support/users/netsales/)
 * (@netsales)
 * [2 years, 1 month ago](https://wordpress.org/support/topic/error-worker-failed/#post-17745620)
 * Hello,
 * I have disabled all DIVIs Performance optimizations, see
   [https://www.elegantthemes.com/blog/wp-content/uploads/2021/08/optin-list.jpg](https://www.elegantthemes.com/blog/wp-content/uploads/2021/08/optin-list.jpg)
   unfortunately there is no change.
 * I tested with older PHP 7.4 and deactivated APCu and OPCache…flush cache…, but
   no chance.
   I’m really at a loss as to what the problem is.
 *  [Nukak Asanansi](https://wordpress.org/support/users/nasanansi/)
 * (@nasanansi)
 * [2 years ago](https://wordpress.org/support/topic/error-worker-failed/#post-17752097)
 * Hi [@netsales](https://wordpress.org/support/users/netsales/),
 * Thanks for getting back to us.
 * From the screenshot you shared, it seems the performance optimizations are all“
   Enabled” not “Disabled” with the exception of _Defer Additional Third Party Scripts_.(
   which is disabled)
 * Please try disabling the performance optimizations and let me know how it works
   for you.
 * Thanks 🙂
 *  [Nukak Asanansi](https://wordpress.org/support/users/nasanansi/)
 * (@nasanansi)
 * [2 years ago](https://wordpress.org/support/topic/error-worker-failed/#post-17758273)
 * Hi [@netsales](https://wordpress.org/support/users/netsales/),
 * We haven’t heard back from you yet, so I’ll be closing this thread for now.
 * If the issue still occurs, please reply to this thread, and we’ll take a look.
 * Have a good one 🙂
 *  [youmound](https://wordpress.org/support/users/youmound/)
 * (@youmound)
 * [2 years ago](https://wordpress.org/support/topic/error-worker-failed/#post-17759021)
 * [@nasanansi](https://wordpress.org/support/users/nasanansi/) Can you show me 
   how to exclude? for more popular plugins, e.g. WP Optimize…?

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Error worker failed’ is closed to new replies.

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 * 5 replies
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 * Last reply from: [youmound](https://wordpress.org/support/users/youmound/)
 * Last activity: [2 years ago](https://wordpress.org/support/topic/error-worker-failed/#post-17759021)
 * Status: resolved