TypeError: must be str, not NoneType

[eskuai]

Hi,

I am trying to test vulners-scanner, and i got the following erro:

[root@k8s-master vulners-scanner]# ./linuxScanner.py 

             _
__   ___   _| |_ __   ___ _ __ ___
\ \ / / | | | | '_ \ / _ \ '__/ __|
 \ V /| |_| | | | | |  __/ |  \__ \
  \_/  \__,_|_|_| |_|\___|_|  |___/

Traceback (most recent call last):
  File "./linuxScanner.py", line 125, in <module>
    scannerInstance.scan(checkDocker=False)
  File "./linuxScanner.py", line 110, in scan
    hostInstance = self.auditSystem(sshPrefix=None,systemInfo="Host machine")
  File "./linuxScanner.py", line 65, in auditSystem
    installedPackages = instance.getPkg()
  File "/root/vulners-scanner/scanModules/centosDetect.py", line 40, in getPkg
    pkgList += self.sshCommand("rpm -qa |grep '^kernel.*" + uname + "'")
TypeError: must be str, not NoneType

my python is

root@k8s-master vulners-scanner]# python
Python 3.6.8 (default, Aug 24 2020, 17:57:11) 
[GCC 8.3.1 20191121 (Red Hat 8.3.1-5)] on linux

maybe kernel version?

Linux k8s-master 5.10.3 #2 SMP PREEMPT Mon Dec 28 23:41:24 CET 2020 x86_64 x86_64 x86_64 GNU/Linux

and testing

[root@k8s-master vulners-scanner]# ./lazyScanner.py
OS Name - rhel, OS Version - 8
Total provided packages: 986
Traceback (most recent call last):
  File "./lazyScanner.py", line 95, in <module>
    scanner.auditSystem()
  File "./lazyScanner.py", line 80, in auditSystem
    response = urllib2.urlopen(req, json.dumps(payload).encode('utf-8'))
  File "/usr/lib64/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib64/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib64/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib64/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 402: Payment Required

What am i doing wrong?

Tx