[FIX] b_shift : attendance sheet shifts worker not required

beesdoo_shift/models/attendance_sheet.py

@@ -46,7 +46,6 @@ class AttendanceSheetShift(models.Model):
             ("working_mode", "in", ("regular", "irregular")),
             ("state", "not in", ("unsubscribed", "resigning")),
         ],
-        required=True,
     )
     task_type_id = fields.Many2one(
         "beesdoo.shift.type", string="Task Type", default=_default_task_type_id
@@ -342,6 +341,7 @@ class AttendanceSheet(models.Model):
                 compensation_nb = "1"
             else:
                 compensation_nb = "2"
+            if task.worker_id:
                 new_expected_shift = expected_shift.create(
                     {
                         "attendance_sheet_id": new_sheet.id,