fix: Correction de l'affichage du message d'erreur lors de l'authentification.

cerfig_sso_authentification/sso.py

@@ -1,13 +1,15 @@
 from simple_sso.sso_server.server import Server
+
 from authentification.models import Employe
 
+
 class CerfigSSOServer(Server):
     def get_user_data(self, user, consumer, extra_data=None):
         user_data = super().get_user_data(user, consumer, extra_data)  
         employe = Employe.objects.get(user=user)   
         
         user_data.update({
-            'departement': employe.departement.nom,
+            'departement': employe.departement.nom if employe.departement else "",
             'chef_departement': employe.chef,
             'groups': [group.name for group in user.groups.all()],
         })