goja-web/src/main/java/goja/mvc/Controller.java
protected void renderAjaxError(String error, Exception e) {
        renderJson(AjaxMessage.error(error, e));
    }
protected void renderAjaxError(String error, Exception e) {
        renderJson(AjaxMessage.error(error, e));
    }
Rendering errors information, in Json format.

@param error errors information.
@param e     exception.