Title: cannot activate new install
Last modified: March 15, 2023

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# cannot activate new install

 *  Resolved [kattouf](https://wordpress.org/support/users/kattouf/)
 * (@kattouf)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-new-install/)
 * When i activate plugin it gives critical error on website:
 * PHP Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of
   type Countable|array, null given in /nas/content/live/mydomaincom/wp-content/
   plugins/matomo/app/core/Filesystem.php:154\nStack trace:\n#0 /nas/content/live/
   mydomaincom/wp-content/plugins/matomo/app/core/Filesystem.php(154): count(NULL)\
   n#1 /nas/content/live/mydomaincom/wp-content/plugins/matomo/app/plugins/Diagnostics/
   Diagnostic/NfsDiskCheck.php(36): Piwik\Filesystem::checkIfFileSystemIsNFS()\n#
   2 /nas/content/live/mydomaincom/wp-content/plugins/matomo/app/plugins/Diagnostics/
   DiagnosticService.php(68): Piwik\Plugins\Diagnostics\Diagnostic\NfsDiskCheck-
   >execute()\n#3 /nas/content/live/mydomaincom/wp-content/plugins/matomo/app/plugins/
   Diagnostics/DiagnosticService.php(54): Piwik\Plugins\Diagnostics\DiagnosticService-
   >run(Array)\n#4 /nas/content/live/mydomaincom/wp-content/plugins/matomo/classes/
   WpMatomo/Admin/SystemReport.php(509): Piwik\Plugins\Diagnostics\DiagnosticService-
   >runDiagnostics()\n#5 /nas/content/live/mydomaincom/wp-content/plugins/matomo/
   classes/WpMatomo/Admin/SystemReport.php(246): WpMatomo\Admin\SystemReport->get_matomo_info()\
   n#6 /nas/content/live/mydomaincom/wp-content/plugins/matomo/classes/WpMatomo/
   Admin/SystemReport.php(287): WpMatomo\Admin\SystemReport->get_error_tables()\
   n#7 /nas/content/live/mydomaincom/wp-content/plugins/matomo/classes/WpMatomo/
   Admin/Menu.php(183): WpMatomo\Admin\SystemReport->errors_present()\n#8 /nas/content/
   live/mydomaincom/wp-includes/class-wp-hook.php(308): WpMatomo\Admin\Menu->add_menu(”)\
   n#9 /nas/content/live/mydomaincom/wp-includes/class-wp-hook.php(332): WP_Hook-
   >apply_filters(NULL, Array)\n#10 /nas/content/live/mydomaincom/wp-includes/plugin.
   php(517): WP_Hook->do_action(Array)\n#11 /nas/content/live/mydomaincom/wp-admin/
   includes/menu.php(155): do_action(‘admin_menu’, ”)\n#12 /nas/content/live/mydomaincom/
   wp-admin/menu.php(428): require_once(‘/nas/content/li…’)\n#13 /nas/content/live/
   mydomaincom/wp-admin/admin.php(158): require(‘/nas/content/li…’)\n#14 {main}\
   n thrown in /nas/content/live/mydomaincom/wp-content/plugins/matomo/app/core/
   Filesystem.php on line 154, referer: [https://www.tccalaska.com/wp-admin/plugin-install.php?s=analytics&tab=search&type=term](https://www.tccalaska.com/wp-admin/plugin-install.php?s=analytics&tab=search&type=term)

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

 *  Plugin Support [varunmatomo](https://wordpress.org/support/users/varunmatomo/)
 * (@varunmatomo)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-new-install/#post-16575101)
 * Hi [@kattouf](https://wordpress.org/support/users/kattouf/) are you using any
   of the following plugins? [https://matomo.org/faq/wordpress/which-plugins-is-matomo-for-wordpress-known-to-be-not-compatible-with/](https://matomo.org/faq/wordpress/which-plugins-is-matomo-for-wordpress-known-to-be-not-compatible-with/)
   
   Are there any other errors visible in your web server log? Also are you able 
   to access the System check within Matomo for WordPress? If so please provide 
   us the output. [https://matomo.org/faq/wordpress/how-do-i-find-and-copy-the-system-report-in-matomo-for-wordpress/](https://matomo.org/faq/wordpress/how-do-i-find-and-copy-the-system-report-in-matomo-for-wordpress/)
 *  Plugin Support [emermatomo](https://wordpress.org/support/users/emermatomo/)
 * (@emermatomo)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-new-install/#post-16634774)
 * Hi [@kattouf](https://wordpress.org/support/users/kattouf/) I assume that it 
   worked since it’s been 2 weeks and will therefore mark the issue for now as resolved.
   If something is not working feel free to leave a comment and we continue following
   up.

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

The topic ‘cannot activate new install’ is closed to new replies.

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 * 2 replies
 * 3 participants
 * Last reply from: [emermatomo](https://wordpress.org/support/users/emermatomo/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-new-install/#post-16634774)
 * Status: resolved