Update main.py

main.py

@@ -457,8 +457,9 @@ async def start():
         df_allcompetences = pd.read_csv('./public/referentiel_competence.csv')
         df_allcompetences = df_allcompetences.sort_values(by=['libelle_competence'])
         df_competences = df_allcompetences[['libelle_competence']].copy()
+        competences_list = []
         competences_list = df_competences['libelle_competence'].tolist()
-        
+        competences_list.insert(0, "")
         cl.user_session.set("arraySettingsComp", competences_list)
         settings = await cl.ChatSettings(
             [