Title: Problem with WP 6.4?
Last modified: November 8, 2023

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# Problem with WP 6.4?

 *  Resolved [sergio79](https://wordpress.org/support/users/sergio79/)
 * (@sergio79)
 * [2 years, 7 months ago](https://wordpress.org/support/topic/problem-with-wp-6-4/)
 * Hi,
 * i try to install today as first time on my WP 6.4 but I receive:
 * “PHP message: PHP Warning: Undefined property: wpdb::$use_mysqli in /var/www/
   clients/client1/web73/web/wp-includes/class-wpdb.php on line 768PHP message: 
   PHP Warning: Undefined property: wpdb::$use_mysqli in /var/www/clients/client1/
   web73/web/wp-includes/class-wpdb.php on line 768PHP message: PHP Fatal error:
   Uncaught Error: Call to undefined function WPStaging\Framework\Adapter\Database\
   mysql_query() in /var/www/clients/client1/web73/web/wp-content/plugins/wp-staging/
   Framework/Adapter/Database/MysqlAdapter.php:37
   Stack trace: 0 /var/www/clients/
   client1/web73/web/wp-content/plugins/wp-staging/Framework/BackgroundProcessing/
   Queue.php(1383): WPStaging\Framework\Adapter\Database\MysqlAdapter->query() 1/
   var/www/clients/client1/web73/web/wp-content/plugins/wp-staging/Backend/Upgrade/
   Upgrade.php(89): WPStaging\Framework\BackgroundProcessing\Queue->maybeAddResponseColumnToTable()
   2 /var/www/clients/client1/web73/web/wp-content/plugins/wp-staging/Backend/Upgrade/
   Upgrade.php(72): WPStaging\Backend\Upgrade\Upgrade->upgrade3_0_7() 3 /var/www/
   clients/client1/web73/web/wp-content/plugins/wp-staging/Backend/Administrator.
   php(224): WPStaging\Backend\Upgrade\Upgrade->doUpgrade() 4 /var/www/clients/client1/
   web73/web/wp-includes/class-wp-hook.php(324): WPStaging\Backend\Administrator”
   while reading response header from upstream, client: 93.55.81.243, server: ***.****.
   it, request: “GET /wp-admin/plugin-install.php?s=staging&tab=search&type=term
   HTTP/2.0”, upstream: “fastcgi://unix:/var/lib/php7.4-fpm/web73.sock:”, host:

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

 *  Plugin Contributor [alaasalama](https://wordpress.org/support/users/alaasalama/)
 * (@alaasalama)
 * [2 years, 7 months ago](https://wordpress.org/support/topic/problem-with-wp-6-4/#post-17184978)
 * Hi [@sergio79](https://wordpress.org/support/users/sergio79/)
 * Thanks for reporting this issue to us, we will be releasing an update soon with
   a fix to this issue.
 * Have a good day,
   Alaa
 *  Thread Starter [sergio79](https://wordpress.org/support/users/sergio79/)
 * (@sergio79)
 * [2 years, 7 months ago](https://wordpress.org/support/topic/problem-with-wp-6-4/#post-17184982)
 * Nice! Thanks!

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

The topic ‘Problem with WP 6.4?’ is closed to new replies.

 * ![](https://ps.w.org/wp-staging/assets/icon-256x256.png?rev=2972932)
 * [WP STAGING - WordPress Backup, Restore & Migration](https://wordpress.org/plugins/wp-staging/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-staging/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-staging/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-staging/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-staging/unresolved/)
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 * 2 replies
 * 2 participants
 * Last reply from: [sergio79](https://wordpress.org/support/users/sergio79/)
 * Last activity: [2 years, 7 months ago](https://wordpress.org/support/topic/problem-with-wp-6-4/#post-17184982)
 * Status: resolved