Update app.py

app.py

@@ -20,7 +20,7 @@ def tts(text):
     try:
         result = tts_client.predict(
             text=text,
-            audio_reference=handle_file('https://github.com/gradio-app/gradio/raw/main/test/test_files/audio_sample.wav),
+            audio_reference=handle_file('https://github.com/gradio-app/gradio/raw/main/test/test_files/audio_sample.wav'),
             api_name="/predict"
         )
         print(f"TTS result: {result}")  # Debug print to see what's returned