.Net framework 4.5 await authorize hangs

I am running below code from my console application and it works perfectly and I can fetch data

static async Task GetCallLogs() {
 var rc = new RestClient(RINGCENTRAL_CLIENT_ID, RINGCENTRAL_CLIENT_SECRET, RINGCENTRAL_PRODUCTION_URL); await rc.Authorize("username", "ext", "password"); 
// making api calls
}

But when I am doing the same thing from the .NET framework controller, system hangs at await

public void  UpdateRingCentral()
   {
             var t= new GetCallLogs();
             t.Wait();
   }

public async Task GetCallLogs() { 
var rc = new RestClient(RINGCENTRAL_CLIENT_ID, RINGCENTRAL_CLIENT_SECRET, RINGCENTRAL_PRODUCTION_URL); await rc.Authorize("username", "ext", "password"); 
// making api calls
}

Any advice or suggestions for fixing this issue.