Title: Error complete lessons
Last modified: February 1, 2022

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# Error complete lessons

 *  [metricaweb](https://wordpress.org/support/users/metricaweb/)
 * (@metricaweb)
 * [4 years, 4 months ago](https://wordpress.org/support/topic/error-complete-lessons/)
 * Currently since the update my students are able to complete a lesson for us. 
   This error appears:
 * Error! Invalid lesson or security check failed.
 * I have tried disabling the cache and different plugins, the same thing happens.
 * Maybe it’s the update or it has something to do with my site, can someone check
   if the same thing happens to you?
 * Thank you very much.

Viewing 1 replies (of 1 total)

 *  Plugin Support [brianvu-tp](https://wordpress.org/support/users/briantp/)
 * (@briantp)
 * [4 years, 4 months ago](https://wordpress.org/support/topic/error-complete-lessons/#post-15335360)
 * Hi,
 * Please disable all plugins except LearnPress and addons of the LearnPress plugin,
   switch to the default WordPress theme to check.
    Note: You should enable the 
   debug mode of WordPress before.
 * Thanks

Viewing 1 replies (of 1 total)

The topic ‘Error complete lessons’ is closed to new replies.

 * ![](https://ps.w.org/learnpress/assets/icon-256x256.gif?rev=3254420)
 * [LearnPress - WordPress LMS Plugin for Create and Sell Online Courses](https://wordpress.org/plugins/learnpress/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/learnpress/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/learnpress/)
 * [Active Topics](https://wordpress.org/support/plugin/learnpress/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/learnpress/unresolved/)
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 * 1 reply
 * 2 participants
 * Last reply from: [brianvu-tp](https://wordpress.org/support/users/briantp/)
 * Last activity: [4 years, 4 months ago](https://wordpress.org/support/topic/error-complete-lessons/#post-15335360)
 * Status: not resolved