StockListing('KOSDAQ') error #268

list_stocks = fdr.StockListing('KOSDAQ')
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\jedir.conda\envs\py31x_32b\lib\site-packages\FinanceDataReader\data.py", line 160, in StockListing
return KrxMarcapListing(market).read()
File "C:\Users\jedir.conda\envs\py31x_32b\lib\site-packages\FinanceDataReader\krx\listing.py", line 43, in read
j = json.loads(html_text)
File "C:\Users\jedir.conda\envs\py31x_32b\lib\json_init_.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Users\jedir.conda\envs\py31x_32b\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\jedir.conda\envs\py31x_32b\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)