Title: Error when using on multi site network
Last modified: November 23, 2023

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# Error when using on multi site network

 *  Resolved [odecharette](https://wordpress.org/support/users/odecharette/)
 * (@odecharette)
 * [2 years, 6 months ago](https://wordpress.org/support/topic/error-when-using-on-multi-site-network/)
 * Hi,
   Thanks for your plugin, it seems really cool !I installed the plugin on a
   multisite network (5 shops).
 * I can see abandonned carts on 1st shop, but then I have Error 500 on the admin
   page of other shops inside the same network.
 * Here is the log. FYI we have the plugin W3 total cache installed.
 * Can you help us?
 * Thanks
 *     ```wp-block-code
       [23-Nov-2023 09:50:38 UTC] PHP Fatal error:  Uncaught TypeError: mysqli_num_fields(): Argument #1 ($result) must be of type mysqli_result, bool given in /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/wp-db.php:3547
       Stack trace:
       #0 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/wp-db.php(3547): mysqli_num_fields(false)
       #1 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/wp-db.php(737): wpdb->load_col_info()
       #2 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-content/plugins/w3-total-cache/DbCache_WpdbInjection_QueryCaching.php(218): wpdb->__get('col_info')
       #3 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-content/plugins/w3-total-cache/DbCache_WpdbNew.php(122): W3TC\DbCache_WpdbInjection_QueryCaching->query('DESCRIBE wp_2_c...')
       #4 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/wp-db.php(2836): W3TC\DbCache_WpdbNew->query('DESCRIBE wp_2_c...')
       #5 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-admin/includes/upgrade.php(2803): wpdb->get_results('DESCRIBE wp_2_c...')
       #6 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-content/plugins/woo-save-abandoned-carts/includes/class-cartbounty-activator.php(60): dbDelta(Array)
       #7 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-content/plugins/woo-save-abandoned-carts/cartbounty-abandoned-carts.php(72): CartBounty_Activator::activate()
       #8 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-content/plugins/woo-save-abandoned-carts/admin/class-cartbounty-admin.php(2541): activate_cartbounty()
       #9 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/class-wp-hook.php(307): CartBounty_Admin->check_version('')
       #10 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
       #11 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
       #12 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-settings.php(461): do_action('plugins_loaded')
       #13 /srv/www/$$$$MY-WEBSITE.fr$$$/shared/wp-config.php(124): require_once('/srv/www/config...')
       #14 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-load.php(50): require_once('/srv/www/config...')
       #15 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-blog-header.php(13): require_once('/srv/www/config...')
       #16 /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/index.php(17): require('/srv/www/config...')
       #17 {main}
         thrown in /srv/www/$$$$MY-WEBSITE.fr$$$/releases/20231123090730Z/wp-includes/wp-db.php on line 3547
       ```
   

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

 *  Plugin Contributor [Nauriskolats](https://wordpress.org/support/users/nauriskolats/)
 * (@nauriskolats)
 * [2 years, 6 months ago](https://wordpress.org/support/topic/error-when-using-on-multi-site-network/#post-17224477)
 * Hi [@odecharette](https://wordpress.org/support/users/odecharette/), thank you
   for posting about your issue here.
   This is the first time we have received an
   issue with using CartBounty on a multi-site WordPress installation.
 * We will try to recreate this on our own testing environment and let you know 
   about our findings.
 * Kind regards,
   Nauris
 *  Plugin Contributor [Nauriskolats](https://wordpress.org/support/users/nauriskolats/)
 * (@nauriskolats)
 * [2 years, 6 months ago](https://wordpress.org/support/topic/error-when-using-on-multi-site-network/#post-17224622)
 * Have just returned with solid and good test results. Here is what we did:
   1) 
   Installed and setup a new multi-site WordPress installation2) Added 3 sites total3)
   Installed CartBounty plugin while located on the Network Admin Plugins page4)
   Network activated CartBounty plugin to make sure all sites can use it
 * After that we switched between different sites and did not find any issues or
   errors. Maybe you can share your experience or some additional testing scenario
   that you used?
 *  Thread Starter [odecharette](https://wordpress.org/support/users/odecharette/)
 * (@odecharette)
 * [2 years, 6 months ago](https://wordpress.org/support/topic/error-when-using-on-multi-site-network/#post-17225016)
 * Hi [@nauriskolats](https://wordpress.org/support/users/nauriskolats/)
 * Thanks for your testing !
 * The scenario seams good. I’ll have a look on it with my developper, next week.
   I’ll come back to you
 * Many thanks
 * Olivia

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

The topic ‘Error when using on multi site network’ is closed to new replies.

 * ![](https://ps.w.org/woo-save-abandoned-carts/assets/icon-256x256.gif?rev=2768009)
 * [CartBounty - Save and recover abandoned carts for WooCommerce](https://wordpress.org/plugins/woo-save-abandoned-carts/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/woo-save-abandoned-carts/#faq)
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## Tags

 * [error 500](https://wordpress.org/support/topic-tag/error-500/)
 * [network](https://wordpress.org/support/topic-tag/network/)

 * 3 replies
 * 2 participants
 * Last reply from: [odecharette](https://wordpress.org/support/users/odecharette/)
 * Last activity: [2 years, 6 months ago](https://wordpress.org/support/topic/error-when-using-on-multi-site-network/#post-17225016)
 * Status: resolved