upated shipping fee and using voucher code

app/Models/teamstore/TeamStoreModel.php

@@ -184,6 +184,7 @@ class TeamStoreModel extends Model
 
 		$i = DB::table('cart_tmp')->select(DB::raw('SUM(Quantity * Price) AS Subtotal'))
 			->where('CartKey', '=', $cartKey)
+			->where('VoucherId', '=', null)
 			->get();
 		return $i;
 	}