SSL connect error

[anilgangani04]

Can anyone please guide how can i fix this issue?

curl --sslv2 https://tlstest.paypal.com/ -v

• About to connect() to tlstest.paypal.com port 443 (#0)
• Trying 104.93.171.190... connected
• Connected to tlstest.paypal.com (104.93.171.190) port 443 (#0)
• Initializing NSS with certpath: sql:/etc/pki/nssdb
• NSS error -12168
• Closing connection #0
• SSL connect error curl: (35) SSL connect error

cat /etc/*release CentOS release 6.7 (Final) CentOS release 6.7 (Final) CentOS release 6.7 (Final)

curl -V curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.19.1 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2 Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz