Nginx not logging to correct log file

This issue has come up this week.

This is the simple line which tells nginx to log to a file,

access_log /var/log/nginx/infotrack_access.log;

But this is misbehaving.

This file(/var/log/nginx/infotrack_access.log) is empty now, and all the logs are being written to /var/log/nginx/infotrack_access.log.1 and not /var/log/nginx/infotrack_access.log.

Why is this happening ?

EDIT - This happened after I added this line to the file,

access_log syslog:server=localhost:514 rsyslog;

Below is the nginx.conf file,

user www-data;
worker_processes auto;
pid /run/;
include /etc/nginx/modules-enabled/*.conf;

events {
    worker_connections 768;

http {

	sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

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

	access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;