What is this Warning Message?

I get this warning message, when I go to the product page. What is it and what do I need to do to get rid of it.

Warning: Invalid argument supplied ... (see the attached file)

I am using Hikashop v1.5.4

Cheers

Hi,

That error comes form the function getTableColumns of the joomla mysqli driver.HikaShop never uses that function.
So I don't know the cause of the problem.
What you can do is to edit that file and just before that link, you can add the line:
if(!is_array($fields)) return $fields;

That will remove the error message.

If this is not really critical I can live with a message. I don't really know how to get in to view this link, unless you think differently.

You can edit that file via FTP using filezilla for example.
It's not critical at all.