Stock forecast: The value for field "Product" in "Stock Forecast Line" is not valid according to its domain

Good morning,

when I try to create a new stock forecast (having that module installed), I get this error message:

Bildschirmfoto von 2022-08-18 21-43-47

This also happens when I choose just one article, which is NOT a “consumeable”. When I switch the product choosen to “consumeable” before, the same thing happens.
What’s my mistake?

Greetings,
Wolf

I guess it is a bug that must be reported that the complete wizard tries to fill a forecast for consumable products which are forbidden.