web-services - パースで pfquery が機能しない

Question

PFQuery *queryBankList = [PFQuery queryWithClassName:@"Blood_Bank_Master"];

[queryBankList findObjectsInBackgroundWithBlock:^(NSArray *BankObjects, NSError *error)
{
    if (!error)
    {
        [aBankInfo addObjectsFromArray:BankObjects];

    } else
    {
        // Log details of the failure
        NSLog(@"Error: %@ %@", error, [error userInfo]);
    }
}];