I have followed the instructions I think correctly, exported a product with attributes from NopCommerce 3.8, then altered it (without altering the column headings) and I get an Object Reference not set to an instance of an object. Its crashing on the first of the product attribute heading lines.
Does anyone know what the correct product import spreadsheet layout is?
I've looked on these forums and many recommend NopAdmin, although I've noticed that NopAdmin doesn't support 3.8, which is a shame, they stopped developing it at 3.7.