What steps will reproduce the problem?
Get a form that has a select1 with no choices. Let the select1 field be "my_select". Try to start a new form with that form
What is the expected output?
The error message should include the name of the field with the error, for example: "Select question 'my_select' has no choices"
What do you see instead?
The error message is incomplete: "Select question has no choices", it doesn't tell you which question.