<!-- Describe the issue -->
Hello evryone, I get nothing when I click in open wallet, I am new to bitcoin and expect to show something.

![BitcoinIssue](https://user-images.githubusercontent.com/39341595/57179721-5024fc00-6e9e-11e9-80dd-af5e4345be48.png)

I'am using Bitcoin Core (both in testnet and mainnet, didn't work) 0.18 on window 10. 

#endif 
        unitDisplayControl->setOptionsModel(_clientModel->getOptionsModel());
        OptionsModel* optionsModel = _clientModel->getOptionsModel();
        if (optionsModel && trayIcon) {
            
            connect(optionsModel, &OptionsModel::hideTrayIconChanged, this, &BitcoinGUI::setTrayIconVisible);
            
            setTrayIconVisible(optionsModel->getHideTrayIcon());
        }
    } else {
        
        toggleHideAction->setEnabled(false);
        if(trayIconMenu)
        {
            
            trayIconMenu->clear();
        }
        
        rpcConsole->setClientModel(nullptr);
#ifdef ENABLE_WALLET
        if (walletFrame)
        {
            walletFrame->setClientModel(nullptr);
        }
#endif 
        unitDisplayControl->setOptionsModel(nullptr);
    }
}
#ifdef ENABLE_WALLET
void BitcoinGUI::setWalletController(WalletController* wallet_controller)