Unexpected response data from server. Call executeQueryAsync() in Windows Phone app universal && Android Cordova

Hello, can anyone help me with this error?

"Unexpected response data from server" When calling the projContext.executeQueryAsync () method;

var projContext = new PS.ProjectContext(urlProjectOnline);

var resources = projContext.get_enterpriseResources();

projContext.load(resources);
projContext.executeQueryAsync(function () {
 //Mycode
});

I thank you attention.