Function onSendError

onSendError(
messaging: Messaging,
listener: (evt: SendErrorEvent) => any,
): () => void
When sending a RemoteMessage, this listener is called when an error is thrown and the message could not be sent.
Parameters
- messaging: Messaging
  Messaging instance.
- listener: (evt: SendErrorEvent) => any
  Called when the FCM sends the remote message to FCM.
Returns () => void
Function to unsubscribe from the send error listener.
- Defined in modular.ts:298