diff --git a/app/api/auth.py b/app/api/auth.py
index cae9957db8..8662312aa9 100644
--- a/app/api/auth.py
+++ b/app/api/auth.py
@@ -62,7 +62,8 @@ def verify_token(token) -> User:
     """
 
     user = User.check_token(token) if token else None
-    flask_login.login_user(user)
+    if user is not None:
+        flask_login.login_user(user)
     g.current_user = user
     return user
 
diff --git a/app/api/partitions.py b/app/api/partitions.py
index fd94ab96b0..a287aa9639 100644
--- a/app/api/partitions.py
+++ b/app/api/partitions.py
@@ -71,7 +71,7 @@ def formsemestre_partitions(formsemestre_id: int):
 
     """
     formsemestre: FormSemestre = FormSemestre.query.get_or_404(formsemestre_id)
-    partitions = sorted(formsemestre.partitions, key=lambda p: p.numero)
+    partitions = sorted(formsemestre.partitions, key=lambda p: p.numero or 0)
     return jsonify(
         {
             partition.id: partition.to_dict(with_groups=True)
diff --git a/app/models/groups.py b/app/models/groups.py
index fe5d10414d..7c87d442f3 100644
--- a/app/models/groups.py
+++ b/app/models/groups.py
@@ -136,9 +136,7 @@ class GroupDescr(db.Model):
             "numero": self.numero,
         }
         if with_partition:
-            d["partition"] = sorted(
-                self.partition, key=lambda p: p.numero or 0
-            ).to_dict(with_groups=False)
+            d["partition"] = self.partition.to_dict(with_groups=False)
         return d
 
     @classmethod
diff --git a/tests/api/exemple-api-basic.py b/tests/api/exemple-api-basic.py
index f43ce833b7..9d03946b2a 100644
--- a/tests/api/exemple-api-basic.py
+++ b/tests/api/exemple-api-basic.py
@@ -59,7 +59,7 @@ def GET(path: str, headers={}, errmsg=None):
     """Get and returns as JSON"""
     r = requests.get(API_URL + path, headers=headers or HEADERS, verify=CHK_CERT)
     if r.status_code != 200:
-        raise ScoError(errmsg or f"erreur status={r.status_code} !")
+        raise ScoError(errmsg or f"""erreur status={r.status_code} !\n{r.json()}""")
     return r.json()  # decode la reponse JSON
 
 
@@ -72,7 +72,7 @@ def POST(path: str, data: dict = {}, headers={}, errmsg=None):
         verify=CHK_CERT,
     )
     if r.status_code != 200:
-        raise ScoError(errmsg or f"erreur status={r.status_code} !")
+        raise ScoError(errmsg or f"erreur status={r.status_code} !\n{r.json()}")
     return r.json()  # decode la reponse JSON
 
 
@@ -85,7 +85,7 @@ def POST_JSON(path: str, data: dict = {}, headers={}, errmsg=None):
         verify=CHK_CERT,
     )
     if r.status_code != 200:
-        raise ScoError(errmsg or f"erreur status={r.status_code} !")
+        raise ScoError(errmsg or f"erreur status={r.status_code} !\n{r.json()}")
     return r.json()  # decode la reponse JSON