I have this error in the execute statement when doing UPDATE: PDOException: SQLSTATE [HY093]: Invalid parameter number:

I come to you because I already exhaust the options. I already checked the answers and none of them answered my problem to see if you see the error ... This is my code:

   $Clave=$_POST["f_Clave"];
   $Cantidad=$_POST["f_Cantidad"];
   $Categoria=$_POST["f_Categoria"];
   $Proveedor=$_POST["f_Proveedor"];
   $Nombre=$_POST["f_Nombre"];
   $Uni=$_POST["f_Uni"];
   $Peso=$_POST["f_Peso"];
   $Precio=$_POST["f_Precio"];
   $Costo=$_POST["f_Costo"];

   $sql="UPDATE INGREDIENTES SET 
      'Cantidad'=:m_Cantidad,
      'Categoria'=:m_Categoria, 
      'Proveedor'=:m_Proveedor, 
      'Nombre'=:m_Nombre, 
      'Uni'=:m_Uni,
      'Peso'=:m_Peso,
      'Precio'=:m_Precio,
      'Costo':=m_Costo
      WHERE 'Clave'=:m_Clave";

    $resultado=$base->prepare($sql);

    $resultado->execute(array(
       ":m_Clave"=>$Clave, 
       ":m_Cantidad"=>$Cantidad,
       ":m_Categoria"=>$Categoria,
       ":m_Proveedor"=>$Proveedor,
       ":m_Nombre"=>$No,
       ":m_Uni"=>$Uni,
       ":m_Peso"=>$Peso,
       ":m_Precio"=>$Precio,
       ":m_Costo"=>$Costo));

    header("Location:index.php");
}

this is the connection with the BBDD

try{

$base=new PDO("mysql:host=localhost; dbname=antojitos_factory", "root", "");
$base->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$base->exec("SET CHARACTER SET UTF8");

}catch(Exception $e){
    die('¡Error! ->' . $e->getMessage()); 
    echo "Error en la Linea: " . $e->getLine(); 
}

?>

the error is given to me in the "execute" .. I do not see the fault, the table has all the fields to update ... already check all the fields; and according to me everything is fine I do not see the flaw.

The table has the fields that are seen when defining the variables; and in that order are the fields

I hope you can help me

Thank you for your support ...