Error to build PDF file

Traceback (most recent call last):
File "/aml/FinRobot/finrobot/functional/reportlab.py", line 185, in build_annual_report
name = YFinanceUtils.get_stock_info(ticker_symbol)["shortName"]
File "/aml/FinRobot/finrobot/data_source/yfinance_utils.py", line 15, in wrapper
return func(ticker, *args, **kwargs)
File "/aml/FinRobot/finrobot/data_source/yfinance_utils.py", line 44, in get_stock_info
stock_info = ticker.info
File "/root/miniconda3/lib/python3.10/site-packages/yfinance/ticker.py", line 153, in info
return self.get_info()
File "/root/miniconda3/lib/python3.10/site-packages/yfinance/base.py", line 223, in get_info
data = self._quote.info
File "/root/miniconda3/lib/python3.10/site-packages/yfinance/scrapers/quote.py", line 561, in info
self._fetch_complementary(self.proxy)
File "/root/miniconda3/lib/python3.10/site-packages/yfinance/scrapers/quote.py", line 721, in _fetch_complementary
json_data = json.loads(json_str)
File "/root/miniconda3/lib/python3.10/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/root/miniconda3/lib/python3.10/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/root/miniconda3/lib/python3.10/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)