Hello,
No error. On elementor, the group id is showing and when i select the ID, it will show an 'Array' text.
This is the sample of my Custom Fields:
Product Group 1
Product Name
Product Price
What i noticed is all the childfields(Product Name and Product Price) are not showing on the Elementor. It will only show the ID of Product Group on the selection.
Please see ss: https://prnt.sc/m3yfna