Failed to load new options Cannot read properties of undefined (reading 'id')

[INGO420]

I get these two Error messages. Please advise

[react-select-async-paginate] response of "loadOptions" should be an object with "options" prop, which contains array of options.
Received:

AND

Failed to load new options
Cannot read properties of undefined (reading 'id') TypeError: Cannot read properties of undefined (reading 'id')
at newOptions (http://localhost:8080/widgets/mendix/customdropdown/CustomDropdown.js?637885641961072076:11161:228)