Update app.py

app.py

@@ -423,10 +423,11 @@ class VideoClassifier:
         return final_answer
     
     
-    def save_model_choice(self,model_name="mistral"):
+    def save_model_choice(self,model_name):
         global setup_time
         start_time_setup = time.time()
-    
+        if not model_name: 
+            model_name = "mistral"
         self.model_name = model_name
         if self.model_name=='mistral':
             print("Setting up Mistral model for Class Selection")