Galaxy Themes Studio export error

Even after adding the new icons and the updated Lockscreen’s numbers (or enabling just the color instead) I get this undefined error which won’t allow me to export the theme.
I’m using GTS version 15.029w.1
Does anyone know what this is due to and how to fix it?

Thank you

Hello Andrea,
You can contact Theme team directly by logging in to Galaxy Store Seller Portal. After logging click on Help > Contact Us

Thank you.

Hello Andrea, make sure the live icons are added too.
alternative join our private support group in whatsapp