Update apis/chat_api.py

apis/chat_api.py

@@ -113,7 +113,7 @@ class ChatAPIApp:
             #base64EncodedStr = base64.encodebytes(buffer)
             mp3_fp.read()
             return Response(content=mp3_fp.tell(), media_type="audio/mpeg")
-        except gtts.tts.gTTSError as err:
+        except gTTS.tts.gTTSError as err:
                item_response = {
                  "status": 400
                }