помогите чайнику. 504 ошибка :(

user nginx;
worker_processes 1;

error_log /var/log/nginx/error.log;
#error_log /var/log/nginx/error.log notice;
#error_log /var/log/nginx/error.log info;

pid /var/run/nginx.pid;


events {
worker_connections 1024;
}


http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log /var/log/nginx/access.log main;

sendfile on;
#tcp_nopush on;

keepalive_timeout 0;

#gzip on;

# Load config files from the /etc/nginx/conf.d directory
include /etc/nginx/conf.d/*.conf;

#
# The default server
#
server_names_hash_max_size 2048;
server_names_hash_bucket_size 128;
client_max_body_size 32m;