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 /home/pools/public_html/myDB.php:9 Stack trace: #0 /home/pools/public_html/myDB.php(9): mysqli_query(Object(mysqli), 'select * from c...') #1 /home/pools/public_html/productos-categoria.php(28): mysql_query('select * from c...') #2 {main} thrown in /home/pools/public_html/myDB.php on line 9