Problem with select UNION ALL mysql

I mounted the following select in MYSQL:

                SELECT 
            id_produto, 
            SUM(qtd) as qtd 
        FROM 
         (
             SELECT 
                id, 
                id_produto, 
                qtd 
            FROM 
                produtos_pedidos 
            WHERE
                id_pedido = '1'
       UNION ALL
            SELECT 
                id, 
                id_produto, 
                qtd 
            FROM 
                pedidos_barganha
            WHERE
                id_pedido = '1'
                and tipo = 'b'
        ) res
        GROUP BY 
            id_produto 

I squeeze it into PHPMYADMIN and it works, however it's giving some editor errors, and I do not know what it can be.

I'll post the photos here: