ValueError: No JSON object could be decoded when Run snmp-scan.py

Morning All, I am a beginner, I have a problem when I run snmp-scan.py, it said like this:

[[email protected] librenms]# ./snmp-scan.py 10.141.0.0/24 -v
Traceback (most recent call last):
File “./snmp-scan.py”, line 179, in
CONFIG = json.loads(check_output([‘/usr/bin/env’, ‘php’, ‘config_to_json.php’]).decode())
File “/usr/lib64/python2.7/json/init.py”, line 338, in loads
return _default_decoder.decode(s)
File “/usr/lib64/python2.7/json/decoder.py”, line 366, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “/usr/lib64/python2.7/json/decoder.py”, line 384, in raw_decode
raise ValueError(“No JSON object could be decoded”)
ValueError: No JSON object could be decoded

then, this is the result for validate.php

can you help me please :disappointed_relieved: