The Fake Worker error is due to a conflict with caching tools and the PDF Embedder scripts. Please check the following on your site:
- Make sure that you are using the most up-to-date version of the plugin.
- While you no longer need to exclude the PDF Embedder scripts, you still need to make one settings adjustment in the caching plugin to disable inline or aggregation of JS files. Please see https://wp-pdf.com/kb/setting-up-fake-worker-failed-error-message/. Your plugin settings may differ, and it may be necessary to reach out to the caching plugin support if you can not find this setting.
- Once the plugin has been updated, flush the cache to remove the old cached scripts. It may also be necessary to manually delete the minified script (the location of the cached script is listed in the error message).
- Finally, clear your browser cache and reload the page.
I hope this helps!