Expecting property name enclosed in double quotes

[lassebenni]

With the example config stored in config.json:

{
    "start_date": "2017-11-02T00:00:00Z",
    "account_id": "1234567890",
    "role_name": "role_with_bucket_access",
    "bucket": "my-bucket",
    "external_id": "my_optional_secret_external_id",
    "tables": "[{\"search_prefix\":\"exports\",\"search_pattern\":\"my_table\\\\/.*\\\\.csv\",\"table_name\":\"my_table\",\"key_properties\":\"id\",\"date_overrides\":\"created_at\",\"delimiter\":\",\"}]",
}

And running tap-s3-csv -c config.json I get:

CRITICAL Expecting property name enclosed in double quotes: line 8 column 1 (char 406)
Traceback (most recent call last):
  File "/Users//miniconda3/envs/aws/bin/tap-s3-csv", line 8, in <module>
    sys.exit(main())
  File "/Users//miniconda3/envs/aws/lib/python3.8/site-packages/singer/utils.py", line 192, in wrapped
    return fnc(*args, **kwargs)
  File "/Users//miniconda3/envs/aws/lib/python3.8/site-packages/tap_s3_csv/__init__.py", line 71, in main
    args = singer.utils.parse_args(REQUIRED_CONFIG_KEYS)
  File "/Users//miniconda3/envs/aws/lib/python3.8/site-packages/singer/utils.py", line 135, in parse_args
    args.config = load_json(args.config)
  File "/Users//miniconda3/envs/aws/lib/python3.8/site-packages/singer/utils.py", line 76, in load_json
    return json.load(fil)
  File "/Users//miniconda3/envs/aws/lib/python3.8/json/__init__.py", line 293, in load
    return loads(fp.read(),
  File "/Users//miniconda3/envs/aws/lib/python3.8/json/__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "/Users//miniconda3/envs/aws/lib/python3.8/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/Users//miniconda3/envs/aws/lib/python3.8/json/decoder.py", line 353, in raw_decode
    obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 8 column 1 (char 406)

Any ideas?