Failed to Install Puppet Addon: The command '/bin/sh -c npm ci --unsafe-perm' returned a non-zero code: 127

Configuration Frontend
1

Hello, I’m new to HA, making my way through cool things.
I’m trying to configure a xiao_075inch_epaper_panel. Everything OK so far with the ePaper panel, but when trying install Puppet addon (GitHub - balloob/home-assistant-addons: Playground for some add-ons. Nothing serious.) it fails and I get the following error message:

“Failed to Install: The command ‘/bin/sh -c npm ci --unsafe-perm’ returned a non-zero code: 127”

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My Config:

  • Installation method: Home Assistant OS on Home Assistant Yellow
  • Core: 2025.6.1
  • Supervisor: 2025.05.5
  • Operating System: 15.2
  • Frontend: 20250531.3