We've been having issues the last ~30 minutes, starting with this (UTC timestamps):

Sep 27 17:39:09Z Relocating dyno to a new server

Sep 27 17:39:09Z State changed from up to down

Sep 27 17:39:09Z State changed from down to starting

Sep 27 17:39:32Z Starting process with command `npm start`

Sep 27 17:39:33Z State changed from starting to crashed

Sep 27 17:39:33Z State changed from crashed to starting

Sep 27 17:39:33Z Process exited with status 127

Sep 27 17:39:33Z /bin/bash: line 1: npm: command not found