报错信息：
{
"errorMessage": "Expecting value: line 1 column 1 (char 0)",
"errorType": "JSONDecodeError",
"stackTrace": [
[
"File "/code/index.py"",
"line 65",
"in handler",
"request_obj: dict = json.loads(request_body)"
],
[
"File "/usr/local/lib/python3.6/json/init.py"",
"line 354",
"in loads",
"return _default_decoder.decode(s)"
],
[
"File "/usr/local/lib/python3.6/json/decoder.py"",
"line 339",
"in decode",
"obj, end = self.raw_decode(s, idx=_w(s, 0).end())"
],
[
"File "/usr/local/lib/python3.6/json/decoder.py"",
"line 357",
"in raw_decode",
"raise JSONDecodeError("Expecting value", s, err.value) from None"
]
]
}