I am getting this error after i upgraded nopcommerce version 2.65 to 3.0

Error  24  'Nop.Services.Catalog.IProductService' does not contain a definition for 'GetAllProducts' and no extension method 'GetAllProducts' accepting a first argument of type 'Nop.Services.Catalog.IProductService' could be found (are you missing a using directive or an assembly reference?)