Hello! I encountered an error when running the project. What can I do? Tks pro

[ntt07]

Traceback (most recent call last):
File "read-thermal.py", line 101, in
thermal_np = extract_thermal(imgpath)
File "read-thermal.py", line 68, in extract_thermal
meta = json.loads(meta_json)[0]
File "/usr/lib/python2.7/json/init.py", line 339, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded