Unable to open Plaid Link UI, Spinning indefinetely - handler

Question

The error is as below.
The Handler is being deinitialized before Link has completed or been exited. Did you forget to strongly reference the Handler object returned by Plaid.create?
The functionality is working in the native app using the LinkKit framework. In order to use all the functions in objective C we have included a wrapper on top of it which is as below and when building a native app using the wrapper I am facing the above issue.
Wrapper Code.
// LinkKitSwiftwrapper.h
#import <Foundation/Foundation.h>
#import <LinkKit/LinkKit-Swift.h>
#import <UIKit/UIActivity.h>
NS_ASSUME_NONNULL_BEGIN
#interface LinkKitSwiftWrapper : NSObject
- (void)presentPlaidLinkUsingLinkToken: (NSString *)linkToken completionHandler:(void (^)(NSArray *array))callbackServer;
#property (strong, retain, nonatomic, readwrite) id<PLKHandler> linkHandler;
#end
NS_ASSUME_NONNULL_END
//LinkKitswiftWrapper.m
#import "LinkKitSwiftWrapper.h"
#import <LinkKit/LinkKit-Swift.h>
#import <UIKit/UIKit.h>
#import <LinkKit/LinkKit.h>
#implementation LinkKitSwiftWrapper
static void (^callBackObjectServer)(NSArray *);
- (void) presentPlaidLinkUsingLinkToken: (NSString *)linkToken completionHandler:(void (^)(NSArray *array))callbackServer
{
callBackObjectServer = callbackServer;
PLKLinkTokenConfiguration* linkConfiguration = [PLKLinkTokenConfiguration createWithToken:linkToken
onSuccess:^(PLKLinkSuccess *success) {
dispatch_async(dispatch_get_main_queue(), ^{
NSArray *result = #[#"SUCCESS", success.publicToken];
callBackObjectServer(result);
});
}];
linkConfiguration.onExit = ^(PLKLinkExit * exit) {
if (exit.error) {
NSLog(#"exit with %#\n%#", exit.error, exit.metadata);
} else {
NSLog(#"exit with %#", exit.metadata);
}
};
NSError *createError = nil;
id<PLKHandler> handler = [PLKPlaid createWithLinkTokenConfiguration:linkConfiguration
error:&createError];
self.linkHandler = nil;
if (handler) {
[handler retain]
self.linkHandler = handler;
UIViewController *vc = [LinkKitSwiftWrapper topViewController] ;
[self.linkHandler openWithContextViewController:vc];
} else if (createError) {
NSLog(#"Unable to create PLKHandler due to: %#", createError);
dispatch_async(dispatch_get_main_queue(), ^{
NSArray *result = #[#"ERROR", createError.description];
callBackObjectServer(result);
});
}else{
NSString *errorMessage = #"Unknown error occured while trying to create a Plaid link.";
NSLog(#"%#", errorMessage);
dispatch_async(dispatch_get_main_queue(), ^{
NSArray *result = #[#"ERROR", errorMessage];
callBackObjectServer(result);
});
}
}
+ (UIViewController *)topViewController{
return [self topViewController:[[LinkKitSwiftWrapper keyWindow] rootViewController ]];
}
+ (UIViewController *)topViewController:(UIViewController *)rootViewController
{
if (rootViewController.presentedViewController == nil) {
return rootViewController ;
}
if ([rootViewController.presentedViewController isKindOfClass:[UINavigationController class]]) {
UINavigationController *navigationController = (UINavigationController *)rootViewController.presentedViewController;
UIViewController *lastViewController = [[navigationController viewControllers] lastObject];
return [self topViewController:lastViewController];
}
UIViewController *presentedViewController = (UIViewController *)rootViewController.presentedViewController ;
return [self topViewController:presentedViewController];
}
+(UIWindow*)keyWindow
{
UIWindow *foundWindow = nil;
NSArray *windows = [[UIApplication sharedApplication]windows];
for (UIWindow *window in windows) {
if (window.isKeyWindow) {
foundWindow = window;
break;
}
}
return foundWindow;
}
#end
//Native App code
#import "ViewController.h"
#import "PlaidWrapper/LinkKitSwiftWrapper.h"
#interface ViewController ()
#end
static void (^callBackObjectServer)(NSArray *);
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (IBAction)ButtonTouchUpInside:(id)sender {
[ [LinkKitSwiftWrapper new] presentPlaidLinkUsingLinkToken:#"link-sandbox-0f671f81-c144-4160-8a64-0ce51e63dbcd" completionHandler:(void (^)(NSArray* array))callBackObjectServer];
}
#end
Please help.