error when add uitableviewcontroller as subview in uiviewcontroller

i'm doing a simple app that views items from a json server I used UISegment in one UIViewController to add different subview ``` - (IBAction)segmentSwitch:(id)sender { UISegmentedControl *segmentedControl = (UISegmentedControl *) sender; NSInteger selectedSegment = segmentedControl.selectedSegmentIndex; if (selectedSegment == 0) { instantiateViewControllerWithIdentifier:@"prestige"] animated:NO]; UIViewController *subController = [self.storyboard instantiateViewControllerWithIdentifier:@"prestige"]; [mainView addSubview:subController.view]; } else if(selectedSegment == 1) { instantiateViewControllerWithIdentifier:@"latest"]]; //[self setView: [self.storyboard instantiateViewControllerWithIdentifier:@"latest"]]; //UIViewController *subController = [self.storyboard instantiateViewControllerWithIdentifier:@"latest"]; //[mainView addSubview:subController.view]; UITableViewController *tableVC =[self.storyboard instantiateViewControllerWithIdentifier:@"latest"]; [self.view addSubview:tableVC.tableView]; } else if (selectedSegment == 2) { instantiateViewControllerWithIdentifier:@"contactUs"]]; UIViewController *subController = [self.storyboard instantiateViewControllerWithIdentifier:@"contactUs"]; [mainView addSubview:subController.view]; } } ``` my error comes when I select select Segment 2 to view the uitableviewcontroller as subview x code give me the following error exc_bad_access (code=1 address=0x110ff210 on line NSDictionary *latests = [latestArray objectAtIndex:indexPath.row]; ``` - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"latestCell1"; latestCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; NSDictionary *latests = [latestArray objectAtIndex:indexPath.row]; NSString *latest_name_En = [latests objectForKey:@"title_en"]; NSString *logo1 = [latests objectForKey:@"logo"]; NSString *img1 = [latests objectForKey:@"img1"]; NSData *latestsImg1 = [NSData dataWithContentsOfURL:[NSURL URLWithString:img1]]; NSData *latestsLogo1 = [NSData dataWithContentsOfURL:[NSURL URLWithString:logo1]]; cell.latest_name_en1.text = latest_name_En; dispatch_async(dispatch_get_main_queue(), ^{ cell.latest_img1.image = [UIImage imageWithData:latestsImg1]; cell.latest_logo1.image = [UIImage imageWithData:latestsLogo1]; }); return cell; } ``` I'm sure the UITableViewController is working fine as I tried to run it alone and it work also tried it without custom cell and it worked also but with custon cell as a subview it gives the error above.