nginx is refusing connection after root password change

Это так странно. Я использую цифровой океан с serverpilot. Я изменил пароль root на сервере, и сайт не работает.

root@niche-hunter:/# sudo service nginx-sp restart
Job for nginx-sp.service failed because the control process exited with error code. See "systemctl status nginx-sp.service" and "journalctl -xe" for details.
root@niche-hunter:/# journalctl -xe
-- Subject: Unit nginx-sp.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit nginx-sp.service has begun starting up.
Aug 19 14:22:27 niche-hunter sshd[21087]: Failed password for root from 113.195.145.21 port 36880 ssh2
Aug 19 14:22:27 niche-hunter nginx[21115]: nginx: [emerg] BIO_new_file("/etc/nginx-sp/certs/app.amzformula.com/yourdomain_com.crt") failed (SSL: error:02001002:system l
Aug 19 14:22:27 niche-hunter nginx[21115]: nginx: configuration file /etc/nginx-sp/nginx.conf test failed
Aug 19 14:22:27 niche-hunter systemd[1]: nginx-sp.service: Control process exited, code=exited status=1
Aug 19 14:22:27 niche-hunter systemd[1]: Failed to start nginx-sp.
-- Subject: Unit nginx-sp.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit nginx-sp.service has failed.
--
-- The result is failed.
Aug 19 14:22:27 niche-hunter systemd[1]: nginx-sp.service: Unit entered failed state.
Aug 19 14:22:27 niche-hunter systemd[1]: nginx-sp.service: Failed with result 'exit-code'.
Aug 19 14:22:28 niche-hunter systemd[1]: nginx-sp.service: Service hold-off time over, scheduling restart.
Aug 19 14:22:28 niche-hunter systemd[1]: Stopped nginx-sp.
-- Subject: Unit nginx-sp.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit nginx-sp.service has finished shutting down.
Aug 19 14:22:28 niche-hunter systemd[1]: nginx-sp.service: Start request repeated too quickly.
Aug 19 14:22:28 niche-hunter systemd[1]: Failed to start nginx-sp.
-- Subject: Unit nginx-sp.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit nginx-sp.service has failed.
--
-- The result is failed.
Aug 19 14:22:29 niche-hunter sshd[21087]: Failed password for root from 113.195.145.21 port 36880 ssh2
Aug 19 14:22:29 niche-hunter sshd[21087]: Received disconnect from 113.195.145.21 port 36880:11:  [preauth]
Aug 19 14:22:29 niche-hunter sshd[21087]: Disconnected from 113.195.145.21 port 36880 [preauth]
Aug 19 14:22:29 niche-hunter sshd[21087]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.195.145.21  user=root
Aug 19 14:22:29 niche-hunter sshd[21085]: Failed password for root from 221.194.47.233 port 33551 ssh2
Aug 19 14:22:30 niche-hunter sshd[21085]: Received disconnect from 221.194.47.233 port 33551:11:  [preauth]
Aug 19 14:22:30 niche-hunter sshd[21085]: Disconnected from 221.194.47.233 port 33551 [preauth]
Aug 19 14:22:30 niche-hunter sshd[21085]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.194.47.233  user=root