Warning: Trying to access array offset on null in /home/c2791033/public_html/rubro.php on line 25

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 'LIMIT 0, 30' at line 1 in /home/c2791033/public_html/rubro.php:27
Stack trace:
#0 /home/c2791033/public_html/rubro.php(27): mysqli_query(Object(mysqli), 'SELECT prod_id,...')
#1 {main}
  thrown in /home/c2791033/public_html/rubro.php on line 27