Mono.Btls.MonoBtlsException: Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED
http://www.mono-project.com/docs/about-mono/releases/3.12.0/#cert-sync
Mono doesn't create certificates for you. How do they know what you want to trust? Or do you blindly trust everything ?
cert-sync --user
may also be useful