Title: Backend bugs – class addon manager
Last modified: March 20, 2021

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# Backend bugs – class addon manager

 *  Resolved [uswprrew](https://wordpress.org/support/users/uswprrew/)
 * (@uswprrew)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/)
 * In the the plugins admin panel there are visible two bugs.
    On frontend don’t
   make any visibility changes, but also during a creating redirect makes some additional
   bugs which are visible on the backend.
 * Wordpress version: 5.6.1
    PHP version 7.4.14
 * Bug details current visible on the admin panel:
    Notice: Trying to get property‘
   expiry_date’ of non-object in /wp-content/plugins/wordpress-seo-premium/vendor/
   yoast/wordpress-seo/inc/class-addon-manager.php on line 333
 * Notice: Trying to get property ‘expiry_date’ of non-object in /wp-content/plugins/
   wordpress-seo-premium/vendor/yoast/wordpress-seo/inc/class-addon-manager.php 
   on line 333
    -  This topic was modified 5 years, 2 months ago by [uswprrew](https://wordpress.org/support/users/uswprrew/).

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [devnihil](https://wordpress.org/support/users/devnihil/)
 * (@devnihil)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/#post-14211724)
 * [@uswprrew](https://wordpress.org/support/users/uswprrew/) If you have purchased
   SEO Premium you would need to contact us directly at [support@yoast.com](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/support@yoast.com?output_format=md)
   for assistance as this forum is reserved for support of the free version of Yoast
   SEO. Thank you for your understanding.
 *  Thread Starter [uswprrew](https://wordpress.org/support/users/uswprrew/)
 * (@uswprrew)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/#post-14217772)
 * my mistake, I have free version for that moment.
 *  [Pcosta88](https://wordpress.org/support/users/pcosta88/)
 * (@pcosta88)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/#post-14218052)
 * Hi [@uswprrew](https://wordpress.org/support/users/uswprrew/)!
 * To clarify, are you a Yoast SEO Premium user? We ask as the error messages are
   coming from the Yoast SEO Premium plugin. If you did purchase the Yoast SEO Premium
   plugin we ask that you please send us an email: [support@yoast.com](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/support@yoast.com?output_format=md).
   That way you can gain access to our premium support so we can dive into the issue.
   Our premium support agents would love to investigate!
 * We ask as we are not sure what is meant by “I have free version for that moment”.
   In addition, this forum is for people who have issues or questions when the free
   plugin is active on the site.
 *  [devnihil](https://wordpress.org/support/users/devnihil/)
 * (@devnihil)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/#post-14245384)
 * We are going ahead and marking this issue as resolved due to inactivity. If you
   require any further assistance please create a new issue.

Viewing 4 replies - 1 through 4 (of 4 total)

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## Tags

 * [admin-panel](https://wordpress.org/support/topic-tag/admin-panel/)
 * [seo yoast](https://wordpress.org/support/topic-tag/seo-yoast/)

 * 4 replies
 * 3 participants
 * Last reply from: [devnihil](https://wordpress.org/support/users/devnihil/)
 * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/backend-bugs-class-addon-manager/#post-14245384)
 * Status: resolved