Traffic Stats install can't create traffic_stats user

The traffic_stats install throws errors saying that it cannot create the traffic_stats user. The result is that everything is owned by root instead. The install process should make the necessary user:

Running transaction
groupadd: GID '422' already exists
useradd: group 'traffic_stats' does not exist
passwd: Unknown user name 'traffic_stats'.
chage: user 'traffic_stats' does not exist in /etc/passwd
Installing : traffic_stats-2.0.0-5668.85d14ebe.el7.x86_64 1/1
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root
warning: user traffic_stats does not exist - using root
warning: group traffic_stats does not exist - using root