ndn-litnet hourly traffic in percent of capacity week 37 in 2021

/data/traffic/plot/plot-hr -n ndn-litnet -d 2021--37 -t traffic -f png  >/data/traffic/html/imgs/hr.traffic.ndn-litnet.2021--37.png
Illegal division by zero at /data/traffic/plot/plot-hr line 97.
Plot failed, ret = 255