Am getting the below error in previewing my cascading select questions:

[Kal_Lam]

@susanatieno_1, have you validated your XLSForm through this online validator? The online validator should help you identify syntax issues if any present within your XLSForm.

Feel free to go through this post discussed previously (it should help you validate your XLSForm through the online validator):

Unable to deploy Server error 500

@okware_256, all you need to do is follow the steps outlined below: Open online validator. This screen appears as shared below: [Image 1] There press Choose File and upload your XLSForm. Once the XLSForm is uploaded there, press Submit. As soon as you press Submit, you will see something as shown below: [Image 2] Now press Preview in browser. If your XLSForm has issues, you will see errors and will not be able to open your XLSForm in a browser. But if your XLSForm doesn’t have issues, you wi…