Update app.py

app.py

@@ -58,15 +58,16 @@ def initialize_or_update_tts(model_name):
     if global_tts is None or model_name != current_model_name:
         print(f"Loading model: {model_name}")
         try:
-            # Try loading the model with espeak
-            global_tts = TTS(model_name=model_name, progress_bar=True)
-        except Exception as e:
-            print(f"Error loading model with espeak: {e}")
-            print("Falling back to gruut phonemizer...")
-            # Load the model with gruut phonemizer
+            # Load the model with explicit phonemizer configuration
             global_tts = TTS(model_name=model_name, progress_bar=True)
+            
+            # Force the use of gruut phonemizer
             if hasattr(global_tts.synthesizer, 'phonemizer'):
                 global_tts.synthesizer.phonemizer = "gruut"
+                print("Using gruut phonemizer.")
+        except Exception as e:
+            print(f"Error loading model: {e}")
+            return None
         
         global_tts.to(device)
         current_model_name = model_name
@@ -78,6 +79,8 @@ def generate_tts_audio(text, model_name, voice_choice, speaker_name=None, wav_fi
     try:
         # Initialize or update the TTS model
         tts = initialize_or_update_tts(model_name)
+        if tts is None:
+            return "Error: Failed to load the TTS model.", None
 
         # Determine the reference audio file
         if voice_choice == "existing_speaker":