Title: Exception Code: 0
Last modified: November 2, 2017

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# Exception Code: 0

 *  Resolved [birken](https://wordpress.org/support/users/birken/)
 * (@birken)
 * [8 years, 6 months ago](https://wordpress.org/support/topic/exception-code-0/)
 * Hi,
 * when i try to enable and save: Optimize CSS Delivery or/and Optimize Web Fonts
 * a new page open with this message Exception Code: 0 and nothing is saved.
 * any ideas what is wrong?
    -  This topic was modified 8 years, 6 months ago by [birken](https://wordpress.org/support/users/birken/).

Viewing 1 replies (of 1 total)

 *  Plugin Author [optimalisatie](https://wordpress.org/support/users/optimalisatie/)
 * (@optimalisatie)
 * [8 years, 5 months ago](https://wordpress.org/support/topic/exception-code-0/#post-9734634)
 * Hi birken,
 * Thank you for your feedback!
 * Regrettably, we’ve never received a similar bug report before. The cause could
   originate in your OS, browser, server software, different plugins, conflicting
   plugins (a complex combination) etc.
 * Based on the provided information it is impossible for us to provide a lead to
   a possible cause.
 * Is there any information visible in the browser console (F12)?

Viewing 1 replies (of 1 total)

The topic ‘Exception Code: 0’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/above-the-fold-optimization_fcfbf6.
   svg)
 * [Page Speed Optimization](https://wordpress.org/plugins/above-the-fold-optimization/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/above-the-fold-optimization/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/above-the-fold-optimization/)
 * [Active Topics](https://wordpress.org/support/plugin/above-the-fold-optimization/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/above-the-fold-optimization/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/above-the-fold-optimization/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [optimalisatie](https://wordpress.org/support/users/optimalisatie/)
 * Last activity: [8 years, 5 months ago](https://wordpress.org/support/topic/exception-code-0/#post-9734634)
 * Status: resolved