Many of the Relation Fields use the same term like "Name", but they may be referring to other objects like the name of the partner while you are importing a product and trying to include a supplier and details about the product with that supplier.
The error could use to be more descriptive by specifying the exact object and field. But for now we just have to guess at it.
For example, if you import three products with no data for one of them in the seller_ids/name/id field, you will get this exact error for that row.
name seller_ids/name/id
product1 __export__.res_partner_100
product2
product3 __export__.res_partner_101
It seems that if you have the field seller_ids/name/id listed as something you want to import, it must be fully populated for each row.
From a User Experience standpoint, it would be better if this were not a required field.
To work with this as it is, simply remove the rows from your import if they don't have the seller_ids/name/id info available for that product. Then do another import of the those missing items without that field being imported.