Hi @smexhy,
Buttons that appear as yours do is usually caused by a CSS conflict with another element on your site. When I visited the page, I also saw another issue that needs to be addressed first.
There is a JS conflict occurring that is preventing the pdf.worker.js file from being loaded on the page. The other PDF scripts are being loaded but something is preventing them from outputting the viewer on the page. When that particular error “pdfjsLib script is not defined” has occurred in the past, it has been due to a conflict—usually a GDPR plugin or Facebook pixel scripts. The best way to locate the issue would be to temporarily deactivate other plugins and enable them one at a time until the viewer fails again. This would indicate the source of the conflict.
If you have any other questions, please feel free to send an email to [email protected] as we may not see messages posted here to respond in a timely fashion.
