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/minertu.eu/backend/sources/class.mysqli.db.php:67
Stack trace:
#0 /var/www/minertu.eu/backend/sources/class.mysqli.db.php(67): mysqli_query()
#1 /var/www/minertu.eu/pages/product.php(45): mysqliDb->query()
#2 /var/www/minertu.eu/index.php(87): include('...')
#3 {main}
thrown in /var/www/minertu.eu/backend/sources/class.mysqli.db.php on line 67