SCReachability error while using paytm Sdk

Question

I integrated paytm in my project but i am getting "NSReachability error" because of this code.

[PGServerEnvironment selectServerDialog:self.view completionHandler:^(ServerType type)
     {
         PGTransactionViewController *txnController = [[PGTransactionViewController alloc] initTransactionForOrder:order];
         if (type != eServerTypeNone) {
             txnController.serverType = type;
             txnController.merchant = mc;
             txnController.delegate = self;
             [self showController:txnController];
         }
     }];

Thanks for quick response.