A few days after the update, the following message appears:

Fatal error: Uncaught Error: Call to undefined function mysqli_report() in /home4/mechgw/public_html/wp-includes/class-wpdb.php:1963 Stack trace: #0 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbNew.php(100): wpdb->db_connect() #1 /home4/mechgw/public_html/wp-includes/class-wpdb.php(767): W3TC\DbCache_WpdbNew->db_connect() #2 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbNew.php(221): wpdb->__construct() #3 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbInjection.php(38): W3TC\DbCache_WpdbNew->default_initialize() #4 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbNew.php(107): W3TC\DbCache_WpdbInjection->initialize() #5 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbNew.php(374): W3TC\DbCache_WpdbNew->initialize() #6 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbInjection_QueryCaching.php(294): W3TC\_CallUnderlying->initialize() #7 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_WpdbNew.php(107): W3TC\DbCache_WpdbInjection_QueryCaching->initialize() #8 /home4/mechgw/public_html/wp-content/plugins/w3-total-cache/DbCache_Wpdb.php(53): W3TC\DbCache_WpdbNew->initialize() #9 /home4/mechgw/public_html/wp-content/db.php(81): W3TC\DbCache_Wpdb::instance() #10 /home4/mechgw/public_html/wp-includes/load.php(675): require_once(‘/home4/mechgw/p…’) #11 /home4/mechgw/public_html/wp-settings.php(131): require_wp_db() #12 /home4/mechgw/public_html/wp-config.php(96): require_once(‘/home4/mechgw/p…’) #13 /home4/mechgw/public_html/wp-load.php(50): require_once(‘/home4/mechgw/p…’) #14 /home4/mechgw/public_html/wp-blog-header.php(13): require_once(‘/home4/mechgw/p…’) #15 /home4/mechgw/public_html/index.php(17): require(‘/home4/mechgw/p…’) #16 {main} thrown in /home4/mechgw/public_html/wp-includes/class-wpdb.php on line 1963

Can anyone help me with this?

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