The Select Dropdown CB is deprecated now that you can also create dropdowns with Select Option CBs, but it still needs to be backwards compatible of course with existing forms.
The field_option field had ID 70 before, but this somehow got replaced by a different field in the latest update. So restore ID 70 to the old field and move whatever is there to the latest autoincrement number.
The Select Dropdown CB is deprecated now that you can also create dropdowns with Select Option CBs, but it still needs to be backwards compatible of course with existing forms.
The field_option field had ID 70 before, but this somehow got replaced by a different field in the latest update. So restore ID 70 to the old field and move whatever is there to the latest autoincrement number.