I am running Nginx configured with FastCGI and this is the error I get.
And here’s how to fix the issue.
/etc/nginx/nginx.conf and add the following line to http or server or location context to increase the size limit.
# Fix error: 413 Request Entity Too Large client_max_body_size 8M;
Save the file and reload nginx:
service nginx reload
I also recommend edit the PHP configuration file, because PHP installation also put limits on upload file size.
/etc/php.ini and set the following directives:
upload_max_filesize = 8M post_max_size = 8M
Save the file and restart phpfcgi:
service phpfcgi restart