nginx server crash

[zagorsky]

Contents of April 9th(date of crash) Nginx error log:

2018/04/09 00:07:50 [notice] 534#534: signal process started
2018/04/09 00:07:57 [notice] 547#547: signal process started
2018/04/09 00:07:57 [error] 547#547: open() "/run/nginx.pid" failed (2: No such file or directory)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:443 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to 0.0.0.0:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: bind() to [::]:80 failed (98: Address already in use)
2018/04/09 00:07:58 [emerg] 552#552: still could not bind()