Dynamic UITableView Updates

I'm trying to dynamically add rows to UITableView.
- added (displayed):adding items during viewDidLoad
- Not added (displayed): Add items after AFNetworking call is complete
This is the state of

when insertRowsAtIndexPaths to tableView instance I think I'm trying to keep down the points that I tend to fall in love with, such as main threading.
I am not sure why the second item is not added.

I would appreciate it if someone could give me a hint.

=====
ViewController.h

#import 

@ interface ViewController:UIViewController

@end

ViewController.m

# import "ViewController.h"
#import 

@ interface ViewController()
@property IBOutlet UITableView*tableView;
@property NSMutableArray* cells;
@end

@implementationViewController{
};

static NSSstring* CellIdentifier=@"tableCell";

- (void) viewDidLoad
{
    superviewDidLoad;
    NSLog(@"viewDidLoad";

    self.cells = [[NSMutableArray alloc] init];
    NSSstring*url=@"https://yahoo.co.jp";
    [self.cells addObject:url];
    NSIndexPath* path = [NSIndexPath indexPathForRow:0 inSection:0];
    [self.tableView beginUpdates];
    [self.tableView insertRowsAtIndexPaths: [NSArray arrayWithObject:path] with RowAnimation:UITableViewRowAnimationTop];
    [self.tableView endUpdates];

    self refresh;
}

- (void) refresh
{
    NSSstring*url=@"https://httpbin.org/get";

    AFHTTPSessionManager*manager = AFHTTPSessionManager;
    manager.responseSerializer.acceptableContentTypes=[NSSetSetWithObject:@"application/json";

    [manager GET:url parameters:nil progress:nil success:^(NSURLSessionDataTask*_Nonull task, id_Nullable responseObject)}
        dispatch_async(dispatch_get_main_queue(),^{
            NSIndexPath* path = [NSIndexPath indexPathForRow:0 inSection:0];
            [self.cells addObject:url];
            [self.tableView beginUpdates];
            [self.tableView insertRowsAtIndexPaths: [NSArray arrayWithObject:path] with RowAnimation:UITableViewRowAnimationTop];
            [self.tableView endUpdates];
            NSLog(@"%@",url);
            self.tableView reloadData;
        });
        NSLog(@"end:refresh");
    } failure:^(NSURLSessionDataTask*_Nullable task, NSError*_Nonnull error) {
        NSLog(@"failed1-error=%@", error.localizedDescription);
    }];
}

- (NSInteger) numberOfSectionsInTableView: (UITableView*)tableView
{
    return1;
}

- (NSInteger) tableView: (UITableView*) tableView numberOfRowsInSection: (NSInteger) section
{
    return self.cells.count;
}

- (UITableViewCell*) tableView: (UITableView*) tableView cellForRowAtIndexPath: (NSIndexPath*) indexPath
{
    NSLog (@"cellForRowAtIndexPath");

    UITableViewCell* cell= [tableView requestReusableCellWithIdentifier: CellIdentifier];

    NSInteger row=indexPath.row;

    UILabel*label=[cell viewWithTag:4];
    label.text=self.cells [row];
    NSLog(@"%ld:%@",self.cells.count, label.text);

    return cell;
}

@end

2017-02-0306:44:25.242353 test [11678:2443409] viewDidLoad
2017-02-0306:44:25.330775 test [11678:2443409] cellForRowAtIndexPath
2017-02-0306:44:25.334614 test [11678:2443409]1: https://yahoo.co.jp
2017-02-0306:44:26.134155 test [11678:2443409] end:refresh
2017-02-0306:44:26.134275 test [11678:2443409] https://httpbin.org/get