JSONDecodeError

[James0128]

After I run the "streamlit run NLPfily.py" and get the webpage, there is a jsondecodeerror raised when I choose the service.
I don't know how to solve it, the error is below:
could you please help me ?
File "/home/test/ENTER/lib/python3.8/site-packages/streamlit/script_runner.py", line 332, in _run_script
exec(code, module.dict)
File "/home/test/insight-master/src_streamlit/NLPfiy.py", line 130, in
main()
File "/home/test/insight-master/src_streamlit/NLPfiy.py", line 116, in main
model_details = apicall.model_list(service=service)
File "/home/test/insight-master/src_streamlit/NLPfiy.py", line 24, in model_list
return json.loads(models.text)
File "/home/test/ENTER/lib/python3.8/json/init.py", line 357, in loads
return _default_decoder.decode(s)
File "/home/test/ENTER/lib/python3.8/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/home/test/ENTER/lib/python3.8/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None