List all gif files in photo library

I have a requirement in which the user needs to fetch a gif from a list of gif files in library. I tried to fetch both images & Videos without any issue. But when I used kUTTypeGIF as media, it crashes with error :

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'No available types for source 0'

Here is my code:

#import "ViewController.h"
#import <MobileCoreServices/MobileCoreServices.h>

@interface ViewController ()<UIImagePickerControllerDelegate, UINavigationControllerDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
}

-(IBAction)btnChooseGif:(id)sender {
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePicker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeGIF, nil];   // Here is the crash 
    [self presentViewController:imagePicker animated:YES completion:nil];
}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{

}
@end

How can i solve this? And if kUTTypeGIF media is not supported here, how can i show the list all gif files to the user for choosing one? I need to display gif files only in the UIImagePickerController