I try to import a csv file in a server :
"id","seller_ids/name/id","seller_ids/min_qty","default_code","name","list_price","standard_price"
"__export__.product_product_37","__export__.res_partner_15","","002","bb","1.0","" "__export__.product_product_21","__export__.res_partner_25","","111","aa1","",""
But it always have an error: 'NoneType' object has no attribute 'group' However , when I import this file in other server , it success.. What mistakes I make ?