private static void logJSError(WebDriver driver) {
   if ("true".equals(Configuration.getJSErrorsEnabled())) {
     JavascriptExecutor js = (JavascriptExecutor) driver;
     List<String> error =
         (ArrayList<String>) js.executeScript("return window.JSErrorCollector_errors.pump()");
     if (!error.isEmpty()) {
       StringBuilder builder = new StringBuilder();
       builder.append(
           "<tr class=\"error\"><td>click</td><td>" + error + "</td><td> <br/> &nbsp;</td></tr>");
       CommonUtils.appendTextToFile(logPath, builder.toString());
     }
   }
 }