unknown directive "proxy_cache_background_update"

[billthecatt]

After upgrading nginx to 1.10.3 I get the following error when trying to start nginx:

nginx: [emerg] unknown directive "proxy_cache_background_update" in /etc/nginx/vhosts-enabled/lancache-origin.conf

Commenting "proxy_cache_background_update on;" out of the file allowed the server to start again. Heads up on this for anyone else upgrading to 1.10.3 which is the latest debian stretch release.

Thanks!