FormLogic Error while loading the form in KoboToolbox? Loading error of the form

Below is a screenshot I got after I’ve uploaded a form using XLS Form to Kobo Toolbox,
What does the error denote? Can you deduce which part of the logic is throwing the error?

Welcome to the community, @molo! Have you validated your XLSForm through this online validator? The online validator should help you identify the syntax issues present within your XLSForm.