You selected a microflow for the productlist which has a Product input parameter which you can’t pass from this pass as it is not available. The error states which entity is available for use in a microflow, which is the object in the grid that you are retrieving with a nanoflow: WishList_Overview_Datagrid.
Not sure what you are trying to achieve, but the logic needs to be revised either on the page or in the microflow.