Envato Template Kit Export plugin issues

Hello Guys,

I am trying to finalize the Elementor Template Kit that I have developed but when exporting the templates using Envato Template Kit Export plugin it shows an error message as shown in the screenshot attached.

Could someone please help with what this issue is? I have removed all # from the links and also checked for custom classes but there are no custom classes used in the template. I am stuck with this error.