Unable to fix error when trying to list items Goes to ''Fix Your Products'' - Nothing marked to fix

My items since this morning go to https://sellercentral.amazon.co.uk/fixyourproducts/drafts where I encounter the messages:

‘’ There is no record of the SKU corresponding to this update on your account. This commonly occurs when there are other issues on your SKU.

Listing requires additional information. Click ‘‘Edit draft’’ to continue.’’

When I click on to continue there is nothing highlighted that needs editing and hence I have no clue what I need to do to get the listings live.

Have been using the same template for months (filling up the same spaces) without a problem, so really don’t know what the problem is all of a sudden…

If someone could please help me I would really appreciate it

Thank you in advance