I've debugged this twice now for two separate people with D-link and Extreme devices where total traffic graphs don't work. So far removing this fixes the issues. I can't see any devices I have that would miss this, if we find some then we can add more specific regexes.
Removed device_traffic_descr entry to resolv graphs
Auto-Deploy finished, Test PR at http://2386.ci.librenms.org or https://2386.ci.librenms.org