Compute-rhino3d gives JSONDecodeError

[UgurOzcanFited]

When I run compute-rhino3d, I am getting this error? I tried most of the version of compute-rhino3d samples. It always gives the same error.

curve {"version": 10000, "archive3dm": 60, "opennurbs": -1912309748, "data": "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"}

Traceback (most recent call last):
File "lines.py", line 22, in
output = gh.EvaluateDefinition('twisty.gh', trees)
File "/home/ugur/anaconda3/lib/python3.7/site-packages/compute_rhino3d/Grasshopper.py", line 57, in EvaluateDefinition
response = Util.ComputeFetch(url, args)
File "/home/ugur/anaconda3/lib/python3.7/site-packages/compute_rhino3d/Util.py", line 35, in ComputeFetch
return r.json()
File "/home/ugur/anaconda3/lib/python3.7/site-packages/requests/models.py", line 900, in json
return complexjson.loads(self.text, **kwargs)
File "/home/ugur/anaconda3/lib/python3.7/json/init.py", line 348, in loads
return _default_decoder.decode(s)
File "/home/ugur/anaconda3/lib/python3.7/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/home/ugur/anaconda3/lib/python3.7/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)
I've just try this example ==> https://github.com/mcneel/rhino-developer-samples/tree/7/compute/py/SampleGhBasic
What should I do?
Thanks