Title: Fatal error when activating plugin
Last modified: August 21, 2016

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# Fatal error when activating plugin

 *  Resolved [theusername](https://wordpress.org/support/users/theusername/)
 * (@theusername)
 * [13 years ago](https://wordpress.org/support/topic/fatal-error-when-activating-plugin-6/)
 * I would like to try your plugin, but can’t even get it activated. The following
   message was shown when I tried it:
    Fatal error: Call to undefined function add_review_option()
   in [correct but anonymous path]/wp-content/plugins/all-in-one-schemaorg-rich-
   snippets/index.php on line 127
 * Nog being a programmer, I can’t really figure it out. I see that the function
   exists in settings.php, but somehow it doesn’t work.
 * Thanks for your help!
 * [http://wordpress.org/extend/plugins/all-in-one-schemaorg-rich-snippets/](http://wordpress.org/extend/plugins/all-in-one-schemaorg-rich-snippets/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [theusername](https://wordpress.org/support/users/theusername/)
 * (@theusername)
 * [13 years ago](https://wordpress.org/support/topic/fatal-error-when-activating-plugin-6/#post-3801569)
 * Sorry for the late response.
    I have done all you suggested, the plugin works
   fine locally with the same theme and plugins. The only difference is that my 
   online site is part of a multisite installation. Can that be the problem?
 * For now, I will try other plugins, but I’m still interested in your ideas about
   a possible multisite problem.
 *  Thread Starter [theusername](https://wordpress.org/support/users/theusername/)
 * (@theusername)
 * [13 years ago](https://wordpress.org/support/topic/fatal-error-when-activating-plugin-6/#post-3801572)
 * It works, thank you for your help!

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Fatal error when activating plugin’ is closed to new replies.

 * ![](https://ps.w.org/all-in-one-schemaorg-rich-snippets/assets/icon-256x256.png?
   rev=3287803)
 * [Schema - All In One Schema Rich Snippets](https://wordpress.org/plugins/all-in-one-schemaorg-rich-snippets/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/all-in-one-schemaorg-rich-snippets/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/all-in-one-schemaorg-rich-snippets/)
 * [Active Topics](https://wordpress.org/support/plugin/all-in-one-schemaorg-rich-snippets/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/all-in-one-schemaorg-rich-snippets/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/all-in-one-schemaorg-rich-snippets/reviews/)

 * 2 replies
 * 0 participants
 * Last reply from: [theusername](https://wordpress.org/support/users/theusername/)
 * Last activity: [13 years ago](https://wordpress.org/support/topic/fatal-error-when-activating-plugin-6/#post-3801572)
 * Status: resolved