Facebook授权iOS崩溃

Question

登录Facebook时，应用程序崩溃了。 打开它第一次工作正常，但一旦你登录Facebook 它崩溃了。授权成功但随后崩溃并引发以下异常：

2016-01-26 03:20:35.909 VIT Foody[43064:1911291] {
    id = 10204157645941939;
    name = "Supreet Singh";
}
2016-01-26 03:20:35.914 VIT Foody[43064:1911291] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[__NSCFArray removeObjectAtIndex:]: mutating method sent to immutable object'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010ecd2885 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x000000010e74bdf1 objc_exception_throw + 48
    2   CoreFoundation                      0x000000010ecd27bd +[NSException raise:format:] + 205
    3   CoreFoundation                      0x000000010eccb06e -[__NSCFArray removeObjectAtIndex:] + 94
    4   VIT Foody                           0x000000010e03a90f -[TrendingController choose] + 719
    5   VIT Foody                           0x000000010e039f31 -[TrendingController viewDidLoad] + 1361
    6   UIKit                               0x000000010f41bd65 -[UIViewController loadViewIfRequired] + 860
    7   UIKit                               0x000000010f41c0b4 -[UIViewController view] + 27
    8   UIKit                               0x000000010f47870d -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 502
    9   UIKit                               0x000000010f477a67 -[UITabBarController transitionFromViewController:toViewController:] + 59
    10  UIKit                               0x000000010f473810 -[UITabBarController _setSelectedViewController:] + 377
    11  UIKit                               0x000000010f473686 -[UITabBarController setSelectedViewController:] + 234
    12  UIKit                               0x000000010f33aa1c +[UIView(Animation) performWithoutAnimation:] + 65
    13  UIKit                               0x000000010f46f727 -[UITabBarController _selectDefaultViewControllerIfNecessaryWithAppearanceTransitions:] + 344
    14  UIKit                               0x000000010f470711 -[UITabBarController viewWillAppear:] + 195
    15  UIKit                               0x000000010f4215cc -[UIViewController _setViewAppearState:isAnimating:] + 710
    16  UIKit                               0x000000010f421c6e -[UIViewController __viewWillAppear:] + 149
    17  UIKit                               0x000000010f45cc24 -[UINavigationController _startTransition:fromViewController:toViewController:] + 767
    18  UIKit                               0x000000010f45dbc8 -[UINavigationController _startDeferredTransitionIfNeeded:] + 890
    19  UIKit                               0x000000010f45eac4 -[UINavigationController __viewWillLayoutSubviews] + 57
    20  UIKit                               0x000000010f5e9e2c -[UILayoutContainerView layoutSubviews] + 248
    21  UIKit                               0x000000010f344d44 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 662
    22  QuartzCore                          0x0000000112fe7c80 -[CALayer layoutSublayers] + 146
    23  QuartzCore                          0x0000000112fdc6ae _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 366
    24  QuartzCore                          0x0000000112fdc52c _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
    25  QuartzCore                          0x0000000112fd1104 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 284
    26  QuartzCore                          0x0000000112ffdf6c _ZN2CA11Transaction6commitEv + 508
    27  UIKit                               0x000000010f2c2676 _afterCACommitHandler + 174
    28  CoreFoundation                      0x000000010ebfca27 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
    29  CoreFoundation                      0x000000010ebfc997 __CFRunLoopDoObservers + 391
    30  CoreFoundation                      0x000000010ebf247b __CFRunLoopRun + 1147
    31  CoreFoundation                      0x000000010ebf1d78 CFRunLoopRunSpecific + 488
    32  GraphicsServices                    0x0000000110eb7bca GraphicsServices + 52170
    33  UIKit                               0x000000010f29a79b UIApplicationMain + 171
    34  VIT Foody                           0x000000010e02621f main + 111
    35  libdyld.dylib                       0x00000001150a1a05 libdyld.dylib + 10757
    36  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

趋势视图控制器如下： 视图确实加载方法我猜是

[super viewDidLoad];
    UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
    refreshControl.tintColor=[UIColor whiteColor];
    refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"Loading..."];
    [refreshControl addTarget:self action:@selector(refresh:) forControlEvents:UIControlEventValueChanged];
    [self.mCollectionView addSubview:refreshControl];
    NSDictionary *username;
    save=@"trend";
    if([[NSUserDefaults standardUserDefaults] objectForKey:@"username"])
    {
        username = [[NSUserDefaults standardUserDefaults] objectForKey:@"username"];
        NSLog(@"%@",[username description]);
        name.hidden=NO;
        name.text=[username valueForKey:@"first_name"];
    }
    array = [[NSMutableArray alloc]init];
    arrayB = [[NSMutableArray alloc]init];
    [self.mCollectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cellIdentifier"];
    if([[NSUserDefaults standardUserDefaults] objectForKey:save])
    {
        x=0;
        array=[[NSUserDefaults standardUserDefaults] objectForKey:save];
        [self choose];
    }
    request = [[NSMutableURLRequest alloc]init];
        sta=[NSString stringWithFormat:@"http://vitcreativityclub.com/api/RESTAURANTAPI.php"];
        [request setURL:[NSURL URLWithString:sta]];
        [self requesting:request];
    // Do any additional setup after loading the view.