Cannot verify certificate: unable to get local issuer certificate, unable to verify the first certificate

[TeleMediaCC]

Hi,

I am attempting to use this plugin in Icinga2web with Go Daddy Secure Certificate Authority - G2 issued certificates, but I keep running into an error:

Plugin Output
SSL_CERT CRITICAL *.telemedia.hu: Cannot verify certificate: unable to get local issuer certificate, unable to verify the first certificate

I attached the check_ssl_cert -H www2.telemedia.hu -v -d command result.
error.txt

Hope you can help!