RuntimeError: error while executing function add: Error: errCode: -401003 api parameter type error | errMsg: parameter.data should be object instead of array; (at line 2, col 4)

db.collection('test')
.add({
data: [
{
_id: 'apple-1',
name: 'apple',
category: 'fruit',
price: 10,
},
{
_id: 'orange-1',
name: 'orange',
category: 'fruit',
price: 15,
},
{
_id: 'watermelon-1',
name: 'watermelon',
category: 'fruit',
price: 20,
},
{
_id: 'yaourt-1',
name: 'yaourt',
category: 'dairy',
price: 8,
},
{
_id: 'milk-1',
name: 'milk',
category: 'dairy',
price: 12,
},
{
_id: 'chocolate-1',
name: 'Lindt chocolate',
category: 'chocolate',
price: 16,
},
]
})