Update app.py

app.py

@@ -19,7 +19,7 @@ file_folder = os.path.dirname(os.path.abspath(__file__))
 temp_audio_folder = os.path.join(file_folder, 'temp_audio')
 chats_folder = os.path.join(file_folder, 'chats')
 model_folder = None
-piper_binary_path = os.path.join('piper')
+piper_binary_path = os.path.join(file_folder, 'piper')
 
 # Create necessary directories
 os.makedirs(temp_audio_folder, exist_ok=True)