Plugin failed registration

[aguerot]

Hi,

I get the following error message on the register promise rejection:

Plugin failed registration: Attempt to invoke virtual method 'java.lang.String org.json.JSONObject.optString(java.lang.String, java.lang.String)' on a null object reference

Here is the code I use register:
let res = azureNotificationHubs.register( 'hubname', 'Endpoint=sb://<ns>.servicebus.windows.net/;SharedAccessKeyName=<keyname>;SharedAccessKey=<key>') .then((result) => { let registrationId = result; console.log(Registration id: ${registrationId}); }, (err) => { console.error(Plugin failed registration: ${err}); });

I am using
Cordova 6.3.1
Nodejs 4.4.3
npm 2.15.0
cordova-simulate 0.3.9
cordova-android 5.2.1
cordova-ios 4.2.0
cordova-windows 4.4.2