Column 'product_sku' in where clause is ambiguous

[MAD King]

Hello,

I tried to search a product per custom field and I get this error.

Now, I am not able to access the products anymore.

Every time I click on Products I get this error.

Joomla! 3.9.6
VirtueMart 3.4.2

[Milbo]

Enable the joomla debug and you should see the sql, you may post it here, so that we can fix it.