Title: Activating plugin through wp-cli fails
Last modified: October 12, 2019

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# Activating plugin through wp-cli fails

 *  Resolved [troelskn](https://wordpress.org/support/users/troelskn/)
 * (@troelskn)
 * [6 years, 8 months ago](https://wordpress.org/support/topic/activating-plugin-through-wp-cli-fails/)
 * If I install and activate the plugin through the web interface, it appears to
   work correctly, but doing the same from the wp-cli fails. I suspect it has something
   to do with options/settings not being initiated properly.
 * Here’s the output from wp-cli:
 *     ```
       # wp plugin activate wp-user-manager
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Warning: Cannot use a scalar value as an array in /var/app/plugins/wp-user-manager/includes/options.php on line 77
       Plugin 'wp-user-manager' activated.
       Success: Activated 1 of 1 plugins.
       ```
   
 * If I run `wp option list` after activation, I get this error:
 *     ```
       wp option list
       Fatal error: Uncaught Error: Call to a member function get_names() on null in /var/app/plugins/wp-user-manager/includes/functions.php:104
       Stack trace:
       #0 /var/app/plugins/wp-user-manager/includes/wpum-forms/class-wpum-registration-form.php(216): wpum_get_roles(true)
       #1 /var/app/plugins/wp-user-manager/includes/wpum-forms/class-wpum-registration-form.php(132): WPUM_Registration_Form->get_assigned_role()
       #2 /var/app/plugins/wp-user-manager/includes/wpum-forms/class-wpum-registration-form.php(81): WPUM_Registration_Form->setup_form(Object(stdClass))
       #3 /var/app/plugins/wp-user-manager/includes/install.php(129): WPUM_Registration_Form->__construct(1)
       #4 /var/app/plugins/wp-user-manager/includes/actions.php(286): wpum_install_registration_form()
       #5 /var/app/plugins/wp-user-manager/includes/actions.php(324): wpum_complete_setup()
       #6 /wordpress/wp-includes/class-wp-hook.php(286): wpum_finish_db_setup_after_plugin_init('')
       #7 /wordpress/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array)
       #8 /wordpress/wp-include in /var/app/plugins/wp-user-manager/includes/functions.php on line 104
       Error: The site is experiencing technical difficulties.
       ```
   

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

 *  Thread Starter [troelskn](https://wordpress.org/support/users/troelskn/)
 * (@troelskn)
 * [6 years, 8 months ago](https://wordpress.org/support/topic/activating-plugin-through-wp-cli-fails/#post-12023236)
 * Further to this. If I create the option keys before activating the plugin, it
   appears to go better. I end up missing some pages and possibly other things that
   would have been created during activation.
 *  Plugin Author [WP User Manager](https://wordpress.org/support/users/wpusermanager/)
 * (@wpusermanager)
 * [6 years, 8 months ago](https://wordpress.org/support/topic/activating-plugin-through-wp-cli-fails/#post-12024543)
 * Thanks for the bug report, I’ll get this fixed up in the next version. Are you
   all activated ok now?
 *  Plugin Author [WP User Manager](https://wordpress.org/support/users/wpusermanager/)
 * (@wpusermanager)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/activating-plugin-through-wp-cli-fails/#post-12034780)
 * ​This has now been fixed in the latest version just released – 2.1.11.

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

The topic ‘Activating plugin through wp-cli fails’ is closed to new replies.

 * ![](https://ps.w.org/wp-user-manager/assets/icon-256x256.png?rev=3468506)
 * [WP User Manager - User Profile Builder & Membership](https://wordpress.org/plugins/wp-user-manager/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-user-manager/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-user-manager/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-user-manager/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-user-manager/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-user-manager/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [WP User Manager](https://wordpress.org/support/users/wpusermanager/)
 * Last activity: [6 years, 7 months ago](https://wordpress.org/support/topic/activating-plugin-through-wp-cli-fails/#post-12034780)
 * Status: resolved