Mono: problems with certificates for using nuget

I had problems installing nuget packages on CentOS 7 with the mono packages from my copr at https://copr.fedorainfracloud.org/coprs/tpokorra/mono/ I got this error when running nuget restore: WARNUNG: Error: TrustFailure (Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED)WARNUNG: Error: TrustFailure (Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED) The solution is