NGINX Unknown Directive Stream

I'm trying to setup a UDP Load Balancer using NGINX (1.12.1).

However I'm getting an error…

[ec2-user@ip-172-31-0-184 nginx]$ sudo service nginx start Starting
nginx: nginx: [emerg] unknown directive "stream" in
/etc/nginx/conf.d/load-balancer.conf:1

Here is the config I'm trying to use:

stream {
        upstream backend1 {
                server 10.0.1.50:450;
        }

upstream backend2 {
                server 10.0.1.50:500;
        }

# This server accepts all traffic to port 80 and passes it to the upstream.
        # Notice that the upstream name and the proxy_pass need to match.

        server {
                listen 500 udp;
                proxy_pass backend2;
        }

server {
                listen 4500 udp;
                proxy_pass backend1;
        }

}

And here is the output of nginx -V, to verify that stream is installed.

[ec2-user@ip-172-31-0-184 nginx]$

th=/var/log/nginx/access.log
–http-client-body-temp-path=/var/lib/nginx/tmp/client_body –http-proxy-temp-path=/var/lib/nginx/tmp/proxy –http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi –http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi –http-scgi-temp-path=/var/lib/nginx/tmp/scgi –pid-path=/var/run/nginx.pid –lock-path=/var/lock/subsys/nginx –user=nginx –group=nginx –with-file-aio –with-ipv6 –with-http_ssl_module –with-http_v2_module –with-http_realip_module –with-http_addition_module –with-http_xslt_module=dynamic –with-http_image_filter_module=dynamic –with-http_geoip_module=dynamic –with-http_sub_module –with-http_dav_module –with-http_flv_module –with-http_mp4_module –with-http_gunzip_module –with-http_gzip_static_module –with-http_random_index_module –with-http_secure_link_module –with-http_degradation_module –with-http_slice_module –with-http_stub_status_module –with-http_perl_module=dynamic –with-http_auth_request_module –with-mail=dynamic –with-mail_ssl_module –with-pcre –with-pcre-jit –with-stream=dynamic –with-stream_ssl_module –with-google_perftools_module –with-debug –with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector –param=ssp-buffer-size=4 -m64 -mtune=generic' –with-ld-opt=' -Wl,-E'

Can anyone please help me?