Mandatory fields required in Number Card for 'Field'. How to fix it?

I have standard script report for count of packages.
But when after adding that report in Number Card Doctype, I don’t see any filed type. How to overcome that?

fixed by myself. I was providing empty column and data

if not user_branches:
result = [{“total_count”: 0}]
columns = [
{“label”: “Total Count”, “fieldname”: “total_count”, “fieldtype”: “Int”, “width”: 120},
]