Embedded pdf appears to have stopped working. Joomla 3.9.23, pdf embed pdf-embed-v2-1-8-7dea9d87-zip the site URL is https://wroxham.urc.org.uk/index.php/news/church-magazine.
All I get is a blank window. This used to work under Joomla 3.8, but appears to have stopped since upgrading to 3.9. Please can someone help?