I got it working! Thanks so much. I had not heard of jshint yet. Thanks for the tip

@Mykle1 said in Error when running sudo npm install. magicmirror@2.3.1 cd vendor && yon install (wd=/home/pi/MagicMirror): I could be mistaken but I believe that using sudo npm install can cause problems. Installation of MM and its dependencies should be done as a normal user. For what it’s worth. Good point. I just saw his sudo npm install and followed along without thinking. You can try to uninstall stylelint again with npm uninstall stylelint(with or without sudo , whatever works) and install it again without the sudo command. If this does not yield any success in this issue someone fixed a similar warning (https://github.com/KraigM/homebridge-harmonyhub/issues/97). Never the less this shouldn’t all be necessary. Maybe it’s time to start over frech again and really be cautious about every step you do.