Randomly, the plugin generates an error and fails. The error shows up in the console as (TRUE) renderError and renderInstances for the fullscreen.min.js (ver 1.6). We are running WP Multisite for a client that has a different domain for their English and French site, using WPML. Any insight on what is causing that. Works perfect in one language, but fails 60% of the time in the other.
true fullscreen.min.js:1:20760 renderError https://www.smnb.ca/wp-content/plugins/3d-flip-book/assets/js/fullscreen.min.js?ver=1.6:1 renderInstances https://www.smnb.ca/wp-content/plugins/3d-flip-book/assets/js/fullscreen.min.js?ver=1.6:1 <anonymous> https://www.smnb.ca/wp-content/plugins/3d-flip-book/assets/js/fullscreen.min.js?ver=1.6:1
First of all i recommend to update the plugin. New version has updated PDFJS library, maybe this will solve the issue. Also the problem can be in URLs - CORS policy or something. If it works in 40% maybe server response/cache errors. Very difficult to say.