When I click on the hr_attendance icon, this message appears:

The operation cannot be completed, probably due to the following:
- deletion: you may be trying to delete a record while other records still reference it
- creation/update: a mandatory field is not correctly set
[object with reference: employee_id - employee.id]

Going to the attendance.js, I put a lot of console.logs and I realized that inside the 'do_update_attendance' function, the variable self.employee_id is undefined, but this is the official code (I didn't changed anything).

Is this a bug or I have to modify some code?