Fatal error: Uncaught mysqli_sql_exception: 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 in /var/www/printekinformatica.com.ar/web/php/singleproduct_promocion.php:18
Stack trace:
#0 /var/www/printekinformatica.com.ar/web/php/singleproduct_promocion.php(18): mysqli_query()
#1 /var/www/printekinformatica.com.ar/web/promocion.php(98): include_once('...')
#2 /var/www/printekinformatica.com.ar/web/index.php(20): include_once('...')
#3 {main}
thrown in /var/www/printekinformatica.com.ar/web/php/singleproduct_promocion.php on line 18