Fatal error: Uncaught Exception: Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1<br />Error No: 1064<br />SELECT pr.tax_class_id FROM drn_product pr WHERE pr.product_id = in /var/www/vhosts/drnstore.com/httpdocs/system/storage/modification/system/library/db/mysqli.php:47 Stack trace: #0 /var/www/vhosts/drnstore.com/httpdocs/system/library/db.php(16): DB\MySQLi->query('SELECT pr.tax_c...', Array) #1 /var/www/vhosts/drnstore.com/httpdocs/system/library/google_marketing_tools/master.php(645): DB->query('SELECT pr.tax_c...') #2 /var/www/vhosts/drnstore.com/httpdocs/system/library/google_marketing_tools/master.php(567): google_marketing_tools\Master->get_product_tax_class_id(NULL) #3 /var/www/vhosts/drnstore.com/httpdocs/system/library/google_marketing_tools/google_enhanced_ecommerce.php(87): google_marketing_tools\Master->get_product_price(Array) #4 /var/www/vhosts/drnstore.com/httpdocs/system/library/google_marketing_to in /var/www/vhosts/drnstore.com/httpdocs/system/storage/modification/system/library/db/mysqli.php on line 47