Nginx Helper filesize(): stat failed

WordPress Nginx
#1

I'm using nginx helper with WP Supercache and Wordpress Multisite in subdirectories (using the Map functionality to speed up access). However I'm getting this warning in my nginx log files.

2013/09/24 07:26:41 [error] 29476#0: *29306 FastCGI sent in stderr: "PHP message: PHP Warning: filesize(): stat failed for /var/www/mysite/wp-content/blogs.dir/4416/files/nginx-helper/nginx.log in /var/www/mysite/wp-content/plugins/nginx-helper/purger.php on line 288" while reading response header from upstream, client: 172.22.1.22, server: mysite, request: "POST /norm60132/wp-cron.php?doing_wp_cron=1379978796.7586300373077392578125 HTTP/1.0", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "mysite"

#2

Can you paste output for:

ls -l /var/www/mysite/wp-content/blogs.dir/4416/files/nginx-helper/nginx.log

Please check if that file is present there and has proper permission.

#3