Redirect missing local assets to the live environment. (Place this within the server declaration within the site-specific conf file).
# Directives to send expires headers and turn off 404 error logging.
location ~* \.(js|css|png|jpe?g|gif|ico|svg)$ {
expires 24h;
log_not_found off;
try_files $uri $uri/ @production;
}
location @production {
resolver 8.8.8.8;
proxy_pass http://www.WEBSITEURL.TLD/$uri;
}