webix.ajax().post : uncaught XMLHttpRequest

Hello,

when i execute this code, i obtain the message

 "uncaught #<XMLHttpRequest>"
view:"button", id:"bt", width:150, label:"Valider", align:"center", type:"form", click:function() {
var form = this.getParentView();
														
if (form.validate())													           webix.ajax().post("source.php?id=" + id_cli,  form.getValues(), function(text, data, xhr) { webix.message(text + ' ' + data); });
}

Any ideas ?

thanks you in advance

Fabrice

i found the problem - in source.php i forgot to declare the mysql connexion !