we are having a problem with out Magento2 installation. Everything worked fine until recently when we tried to add a new variant to a configurable product.
The error happens when navigating to the “add product manually” page, see third image.
We tried a few things should have helped, but nothing got us any further. What we did try
TRUNCATE ui_bookmark;
still the same problem
SELECT * FROM catalog_product_entity WHERE sku IS NULL
result is zero.
We are also working with an admin account, so it can’t be a permission issue.
Pointers in any direction are appreciated.
