Certificate.py - ssl.SSLCertVerificationError

[AnaelMobilia]

Hello,

When I run manually the /etc/snmp/certificate.py file configured to monitor an already expired certificate, error is thrown :

Traceback (most recent call last):
  File "/etc/snmp/certificate.py", line 55, in <module>
    certificate_data, error_msg = get_certificate_data(domain['fqdn'], domain['port'])
  File "/etc/snmp/certificate.py", line 28, in get_certificate_data
    conn.connect((domain, port))
  File "/usr/lib/python3.7/ssl.py", line 1150, in connect
    self._real_connect(addr, False)
  File "/usr/lib/python3.7/ssl.py", line 1141, in _real_connect
    self.do_handshake()
  File "/usr/lib/python3.7/ssl.py", line 1117, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1056)

LibreNMS poller display an error :

#### Load poller module applications ####

certificate:-3:Invalid JSON