Azure Notification Hub : Browser (Web Push)

I use SDK from MS and send message via API got message like this:
Postman and Azure Portal
"The Notification could not be delivered due to an unknown error".
SDK return my subscription and when I use external SDK like WebPush I got my notification in browser, but via Notification Hub cant get any notification.
Maybe somebody work with it and fix?

Request via Postman return

201 – Created

<NotificationOutcome xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/netservices/2010/10/servicebus/connect"><Success>0</Success><Failure>1</Failure><Results><RegistrationResult><ApplicationPlatform>browser</ApplicationPlatform><PnsHandle>https://fcm.googleapis.com/fcm/send/dD_bCEGT2V8:APA91bGaULueGvldUK-01iERuA7tdH9eWYM8sPpOHHVgNBvMEAuLz8M4cti5wfs2i61wBxzK36DtTu_v_18hh5kEH_SaeudjULOf-Z6i9g-Nih2dot5D_IjZziDGLy8XmyPcEbYEikWa</PnsHandle><RegistrationId>1339678898588419693-3314164189159452793-2</RegistrationId><Outcome>The Notification could not be delivered due to an unknown error</Outcome></RegistrationResult></Results></NotificationOutcome>

C# code for sending

 var browserNotification = new BrowserNotification(sampleNotificationContent);

 var directSendOutcome = await _hub.SendNotificationAsync(browserNotification,"tag");

I used different approached via MS Notification SDK and did not get any results.

Microsoft.Azure.NotificationHubs
4.2.0