Title: Fatal Error
Last modified: September 22, 2020

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# Fatal Error

 *  Resolved [projecta](https://wordpress.org/support/users/projecta/)
 * (@projecta)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-3639/)
 * We have a Multisite install on Amazon Lightsail. Installed the plugin as super
   admin but did not activate it. Went in as admin to the site and tried to activate
   the plugin. Get this error and it will not activate:
 * Fatal error: Uncaught Error: Cannot unset string offsets in /opt/bitnami/apps/
   wordpress/htdocs/wp-content/plugins/advanced-classifieds-and-directory-pro/public/
   class-acadp-public.php:963 Stack trace: #0 /opt/bitnami/apps/wordpress/htdocs/
   wp-includes/class-wp-hook.php(289): ACADP_Public->filter_general_settings(”) #
   1 /opt/bitnami/apps/wordpress/htdocs/wp-includes/plugin.php(206): WP_Hook->apply_filters(”,
   Array) #2 /opt/bitnami/apps/wordpress/htdocs/wp-includes/option.php(178): apply_filters(‘
   option_acadp_ge…’, ”, ‘acadp_general_s…’) #3 /opt/bitnami/apps/wordpress/htdocs/
   wp-content/plugins/advanced-classifieds-and-directory-pro/includes/class-acadp-
   activator.php(204): get_option(‘acadp_general_s…’) #4 /opt/bitnami/apps/wordpress/
   htdocs/wp-content/plugins/advanced-classifieds-and-directory-pro/acadp.php(97):
   ACADP_Activator::activate() #5 /opt/bitnami/apps/wordpress/htdocs/wp-includes/
   class-wp-hook.php(287): activate_acadp(”) #6 /opt/bitnami/apps/wordpress/htdocs/
   wp-includes/class-wp-hook.php(311): WP_Hook->apply_ in /opt/bitnami/apps/wordpress/
   htdocs/wp-content/plugins/advanced-classifieds-and-directory-pro/public/class-
   acadp-public.php on line 963
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-3639%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [pluginsware](https://wordpress.org/support/users/pluginsware/)
 * (@pluginsware)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-3639/#post-13442175)
 * Hi,
 * Looks like you’re trying to “network-activate” the plugin. Activate it on only
   the subsites on which you need a directory. This can be done under “Plugins -
   > Add New” as the Administrator user.
 * Thanks
 *  Thread Starter [projecta](https://wordpress.org/support/users/projecta/)
 * (@projecta)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-3639/#post-13444777)
 * Hi,
 * No, it is not activated at the network level, just installed. As a regular Admin
   at the site level, “add new” is not an option under plugins, I can only activate
   it.
 *  Thread Starter [projecta](https://wordpress.org/support/users/projecta/)
 * (@projecta)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-3639/#post-13444839)
 * This is my understanding of multisite plugins:
 * In WordPress multisite, only Super Admins have the capability of adding new plugins
   or deleting existing ones.
 * Individual site administrators can activate or deactivate whatever plugins have
   been allowed for their site, but they need to contact the Super Admin to ask 
   for a new plugin to be installed.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Fatal Error’ is closed to new replies.

 * ![](https://ps.w.org/advanced-classifieds-and-directory-pro/assets/icon-128x128.
   png?rev=1506527)
 * [Advanced Classifieds & Directory Pro](https://wordpress.org/plugins/advanced-classifieds-and-directory-pro/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/advanced-classifieds-and-directory-pro/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/advanced-classifieds-and-directory-pro/)
 * [Active Topics](https://wordpress.org/support/plugin/advanced-classifieds-and-directory-pro/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/advanced-classifieds-and-directory-pro/unresolved/)
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 * 3 replies
 * 2 participants
 * Last reply from: [projecta](https://wordpress.org/support/users/projecta/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-3639/#post-13444839)
 * Status: resolved