When I was executing the test case, I noticed that currently, it's impossible to create the kit unpack list. When trying to save products added to the list, the Internal Server Error occurs. The issue occurs on both browsers.
Log into the application as admin.
Go to Administration > Products.
Click the "Edit" button next to any product.
Go to the "Kit Unpack List" tab.
Add some products and enter the quantity for all of them.
Click the "Save Kit Unpack List" button.
The notification that kit unpack list update had failed occurs, as well as an Internal Server Error in the console.
It should be possible to save and update the kit unpack list.