Form Controller Event handler with Script, page is not loading

[SundaramR]

Hi,

In my Xanadu Scoped Next Experience application I have page with Form and Form Controller. On the Form controller set value event, If I add the script to set the value. Page is not loading in the browser. If I remove the script form is loading as expected.  Not sure why when switch to script, page stop loading.

/**
 * @Param {params} params
 * @Param {api} params.api
 * @Param {any} params.event
 */
function evaluateEvent({
    api,
    event
}) {

    try {
        var filedName = "short_description";
        var value = "test";
        var displayValue = "test";
        return {
            fieldName: filedName,
            value: value,
            displayValue: displayValue
        };

    } catch (ex) {
        console.log("Error: " + ex);
    }
}

adding the above code. looking for some help to fix this issue.