[....] Restarting nginx (via systemctl): nginx.serviceJob for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.
failed!
-- Unit nginx.service has begun starting up.
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 nginx[2011]: nginx: [emerg] BIO_new_file("/etc/nginx/ssl/postal.crt") failed (SSL: e
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 nginx[2011]: nginx: configuration file /etc/nginx/nginx.conf test failed
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 systemd[1]: nginx.service: Control process exited, code=exited status=1
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 systemd[1]: Failed to start A high performance web server and a reverse proxy server
-- Subject: Unit nginx.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit nginx.service has failed.
--
-- The result is failed.
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 systemd[1]: nginx.service: Unit entered failed state.
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 systemd[1]: nginx.service: Failed with result 'exit-code'.
Apr 26 22:10:00 ubuntu-512mb-nyc2-01 sudo[1998]: pam_unix(sudo:session): session closed for user root