I can't find on any site the solution to my problem.
my nginx does not start!
I have this error

  nginx: [emerg] "tcp_nopush" directive is duplicate in /etc/nginx/conf….conf:6
nginx: configuration file /etc/nginx/nginx.conf test failed
nginx.service: Control process exited, code = exited status = 1
  nginx.service: Failed with result 'exit-code'.
Failed to start A high performance web server and a reverse proxy server.