Unable to connect: tls://gateway.push.apple.com:2195: 2

[AymenBouein]

Unable to connect: tls://gateway.push.apple.com:2195: 2 (stream_socket_client(): Unable to set local cert chain file `Certif/ainayatiPush12.p12'; Check that your cafile/capath settings include details of your certificate and its issuer)

[makarkotlov]

You need to convert .p12 to .pem with openssl, it will ask a passphrase that you should include in push-notification.php