Update app.py

app.py

@@ -84,7 +84,7 @@ def generate(audio_text, history, temperature=None, max_new_tokens=2048, top_p=0
     return response, audio_file
 
 def text_to_speech(text):
-    tts = gTTS(text=text, lang='EN-US')
+    tts = gTTS(text=text, lang='en')
     audio_fp = io.BytesIO()
     tts.write_to_fp(audio_fp)
     audio_fp.seek(0)