dispatch_group never executes the code!

Hi,

I am using disptach_group to check all the preconditions before executing the final request.

Here I am checking the location permissions whether the user has granted one of the permissions (WhenInUse, Always )

@implementation ConditionEvaluator

+ (void)evaluateConditionsWithcompletionHandler:(void (^) (NSError *_Nullable))completion {

    dispatch_group_t conditionGroup = dispatch_group_create(); 
   
    dispatch_group_enter(conditionGroup);
     
    LocationCondition *loctionCondition = [[LocationCondition alloc] init;

  [[loctionCondition requestPermissionWithHandler:^(CLAuthorizationStatus status) {

   dispatch_group_leave(conditionGroup);

}];

// Condition 2
  dispatch_group_enter(conditionGroup);
// async call
 [condition2 checkWithCompletion:^(){
     dispatch_group_leave(conditionGroup);
}];


// more here
//
    dispatch_group_notify(conditionGroup, dispatch_get_global_queue(0, 0), ^{
        completion(failures);
    });

}

@end

The problem is the requestPermissionWithHandler's block never executes and thread freeze as dispatch_group_leave never gets called.

I tried to debug LocationCondition implementation there I found that requestAlwaysAuthorization never gets called and so, no delegate callbacks of locationManager.

@implementation LocationCondition

- (void)requestPermissionWithHandler:(PermissionHandler)handler {
    _permissionHandler = [handler copy];

    dispatch_async(dispatch_get_main_queue(), ^{
        [self.locManager requestAlwaysAuthorization];
    }); 

}

#pragma mark - CLLocationManagerDelegate

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
   
    if (self.permissionHandler) {
        self.permissionHandler(status);
    }
}


- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
  
    if (self.permissionHandler) {
        self.permissionHandler(CLLocationManager.authorizationStatus);
    }
}

@end

I also tried the following but the block on the main queue never executes.

dispatch_group_t conditionGroup = dispatch_group_create();

  dispatch_group_enter(conditionGroup);

    dispatch_async(dispatch_get_main_queue(), ^{

        NSLog(@"Inside main queue");

        dispatch_group_leave(conditionGroup);

    });

dispatch_group_notify(conditionGroup, dispatch_get_global_queue(0, 0), ^{

        completion(failures);

    });

I don't know what I am doing wrong here.

Any suggestions or help are welcome.