Alexa ,haaska lambda

Hello guys, since I enabled the reverse proxy with nginx, the integration of alexa with aws no longer detects the few devices that I had exposed in the configuration yaml.
Is there any modification to be done on the jason? or from elsewhere? Thanks for the help

{
  "errorMessage": "Expecting value: line 2 column 10 (char 11)",
  "errorType": "JSONDecodeError",
  "requestId": "8b4d8780-e673-484b-a1cd-024d4a16e23c",
  "stackTrace": [
    "  File \"/var/task/haaska.py\", line 106, in event_handler\n    config = Configuration('config.json')\n",
    "  File \"/var/task/haaska.py\", line 80, in __init__\n    self._json = json.load(f)\n",
    "  File \"/var/lang/lib/python3.9/json/__init__.py\", line 293, in load\n    return loads(fp.read(),\n",
    "  File \"/var/lang/lib/python3.9/json/__init__.py\", line 346, in loads\n    return _default_decoder.decode(s)\n",
    "  File \"/var/lang/lib/python3.9/json/decoder.py\", line 337, in decode\n    obj, end = self.raw_decode(s, idx=_w(s, 0).end())\n",
    "  File \"/var/lang/lib/python3.9/json/decoder.py\", line 355, in raw_decode\n    raise JSONDecodeError(\"Expecting value\", s, err.value) from None\n"
  ]
}

Ok solved in changing the port I got the syntax wrong