Update app.py

Handled slow TTS response

app.py

@@ -651,6 +651,14 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
         except:
             final_clean_up(user)
             return [None, gr.Audio(sources=None)]
+        if not os.path.exists(fname):
+            sleep(3)
+            if not os.path.exists(fname):
+                response = client.audio.speech.create(model="tts-1", voice="fable",
+                    input='Sorry, text-to-speech is responding too slow right now', speed=0.85, response_format='wav')
+                with open(fname, 'wb') as fp:
+                    fp.write(response.content)
+                q = []
         return [fname, q]