AJS.RestfulTable.Events.SERVER_ERROR does not work

[JiaxinWang]

I want to give an alert to the user if the loading error occurs to restfulTable. I code as the document told. But It doesn't work.  Thanks a lot.

Below is the code:

new AJS.RestfulTable({
    el: jQuery("#project-table"),
    resources: {
        all: almPluginContext.almAdminBaseUrl + "projects"
    },
    columns: [
        {id: "serverName", header: "Server Name"},
        {id: "jiraProject", header: "Jira Project"},
    ],

    noEntriesMsg: "No entity mapping is defined.",
    loadingMsg: "Loading ..."
});
AJS.$(document).bind(AJS.RestfulTable.Events.SERVER_ERROR, function () {
    alert("server error!");