Title: UnknownErrorException: Load failed
Last modified: January 18, 2024

---

# UnknownErrorException: Load failed

 *  Resolved [dainismichel](https://wordpress.org/support/users/dainismichel/)
 * (@dainismichel)
 * [2 years, 4 months ago](https://wordpress.org/support/topic/unknownerrorexception-load-failed/)
 * the flipbooks won’t load. everything was working fine for a number of years, 
   now they won’t load.
 * what should i do to fix the error?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Funknownerrorexception-load-failed%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [creativeinteractivemedia](https://wordpress.org/support/users/creativeinteractivemedia/)
 * (@creativeinteractivemedia)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/unknownerrorexception-load-failed/#post-17436708)
 * I just checked and it works on HTTPS [https://dainis.net/music/score-bookshelf/](https://dainis.net/music/score-bookshelf/)
 * BTW you are using the PRO version 3.9 which is outdated, you can update to latest
   version by redownloading it from Codecanyon, if you don’t have the license you
   can get it here [https://codecanyon.net/item/real3d-flipbook-wordpress-plugin/6942587](https://codecanyon.net/item/real3d-flipbook-wordpress-plugin/6942587)

Viewing 1 replies (of 1 total)

The topic ‘UnknownErrorException: Load failed’ is closed to new replies.

 * ![](https://ps.w.org/real3d-flipbook-lite/assets/icon-128x128.gif?rev=3038000)
 * [Real 3D Flipbook – 3D FlipBook, PDF FlipBook, PDF Viewer, PDF Embedder](https://wordpress.org/plugins/real3d-flipbook-lite/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/real3d-flipbook-lite/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/real3d-flipbook-lite/)
 * [Active Topics](https://wordpress.org/support/plugin/real3d-flipbook-lite/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/real3d-flipbook-lite/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/real3d-flipbook-lite/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [creativeinteractivemedia](https://wordpress.org/support/users/creativeinteractivemedia/)
 * Last activity: [2 years, 3 months ago](https://wordpress.org/support/topic/unknownerrorexception-load-failed/#post-17436708)
 * Status: resolved