Node-Red: Error trying to install "node-red-node-snmp"

Once I successfully installed Node-Red tried to install node-red-node-snmp by using the Editor selecting the Manage Palette, selecting the Install tab in the palette. I then searched for “node-red-node-snmp”… then I just proceeded to install.

The error log:

2/7/2018, 8:59:17 AM
msg : string[49]
"Installation of module node-red-node-snmp failed:"
2/7/2018, 8:59:17 AM
msg : string[42]
"------------------------------------------"
2/7/2018, 8:59:17 AM
msg : string[599]
"Unhandled rejection Error: EACCES: permission denied, mkdir '/home/nodered'↵↵┌───────────────────────────────────────────────────────────┐↵│ npm update check failed │↵│ Try running with sudo or get access │↵│ to the local update config store via │↵│ sudo chown -R $USER:$(id -gn $USER) /home/nodered/.config │↵└───────────────────────────────────────────────────────────┘↵npm ERR! cb() never called!↵↵npm ERR! This is an error with npm itself. Please report this error at:↵npm ERR! <https://github.com/npm/npm/issues>↵"
2/7/2018, 8:59:17 AM
msg : string[42]
"------------------------------------------"

Any help appreciated. Thx.

Running latest 6.1