diff --git a/requirements.txt b/requirements.txt
index 42c5552..890a841 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 antlr4-python3-runtime
 coverage
 jyquickhelper
+git+https://github.com/sdpython/nbconvert.git@fixes
 pymmails
 pyquickhelper>=1.8
 python-pptx
diff --git a/src/botadi/mokadi/cognitive_services_helper.py b/src/botadi/mokadi/cognitive_services_helper.py
index 9dbb8d3..bcf9110 100644
--- a/src/botadi/mokadi/cognitive_services_helper.py
+++ b/src/botadi/mokadi/cognitive_services_helper.py
@@ -13,7 +13,7 @@
 
 def bytes2python(answer):
     """
-    Converts JSON bytes into a dictionary.
+    Converts :epkg:`JSON` bytes into a dictionary.
 
     @param      answer      bytes
     @return                 any type
@@ -25,7 +25,7 @@ def bytes2python(answer):
 
 def call_api_news(subscription_key, query, market="fr-FR", count=10, offset=0):
     """
-    Retrieve resuls for news.
+    Retrieves resuls for the news API.
 
     @param      subscription_key
     @param      query               query
@@ -112,7 +112,7 @@ def call_api_news(subscription_key, query, market="fr-FR", count=10, offset=0):
 
 def call_api_images(subscription_key, query, market="fr-FR", count=10, offset=0):
     """
-    Retrieve resuls for images.
+    Retrieves resuls for the image API.
 
     @param      subscription_key
     @param      query               query
@@ -193,7 +193,7 @@ def call_api_speech_reco(subkey, lang="fr-FR", filename=None, memwav=None,
 
 def call_api_emotions(subkey, image_or_bytes):
     """
-    Retrieve resuls for news
+    Retrieves resuls for the emotions API.
 
     @param      subkey              subscription key
     @param      image_or_bytes      image or bytes
@@ -205,8 +205,7 @@ def call_api_emotions(subkey, image_or_bytes):
         'Ocp-Apim-Subscription-Key': subkey,
     }
 
-    params = urllib.parse.urlencode({
-    })
+    params = urllib.parse.urlencode({})
 
     if isinstance(image_or_bytes, str):
         with open(image_or_bytes, "rb") as f:
@@ -224,5 +223,8 @@ def call_api_emotions(subkey, image_or_bytes):
         conn.close()
         return bytes2python(data)
     except Exception as e:
+        import pprint
+        pprint.pprint(e)
+        pprint.pprint(e.__dict__)
         raise CognitiveException("[Errno {0}] {1}".format(
             getattr(e, 'errno', '-'), getattr(e, 'strerror', '-'))) from e
diff --git a/src/botadi/mokadi/mokadi_action_emotion.py b/src/botadi/mokadi/mokadi_action_emotion.py
index d254d82..e2f8367 100644
--- a/src/botadi/mokadi/mokadi_action_emotion.py
+++ b/src/botadi/mokadi/mokadi_action_emotion.py
@@ -64,7 +64,7 @@ def get_picture_name(self):
 
     def process_interpreted_message(self, interpretation, message):
         """
-        Process the interpreted message.
+        Processes the interpreted message.
 
         @param      interpretation      interpretation
         @param      message             original message
@@ -79,7 +79,7 @@ def process_interpreted_message(self, interpretation, message):
             done = False
         res = call_api_emotions(self._subkey, filename)
         self.fLOG("[MokadiActionEmotion.process_interpreted_message] ", res)
-        if len(res) == 0:
+        if len(res) == 0 or res.get('statusCode', 200) == 404:
             yield MokadiInfo("error", "", "Aucun résultat. Veuillez recommencer.")
             done = True
         elif "error" in res: