Help with inventory sample

[suchym]

I am new to microdot. I am trying to run sample inventory service.
I managed it after a while. Now I am trying to run the inventory service client, but I got exception at startup. I have no idea why.
Here is what I got:
System.NullReferenceException
HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=Gigya.Microdot.ServiceProxy
StackTrace:
at Gigya.Microdot.ServiceProxy.ServiceProxyProvider.GetConfig()
at Gigya.Microdot.ServiceProxy.ServiceProxyProvider.d__80.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Gigya.Microdot.ServiceProxy.ServiceProxyProvider.d__79.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at InventoryService.Client.FortuneCookieTrader.d__10.MoveNext() in D:\Limos\Downloads\microdot-samples-master\microdot-samples-master\InventoryService\InventoryService.Client\FortuneCookieTrader.cs:line 31

This exception was originally thrown at this call stack:
[External Code]
InventoryService.Client.FortuneCookieTrader.Start() in FortuneCookieTrader.cs