Error when trying to Downlaod Mod

[notroundtv]

Failed installing mod 'material_ui_reborn' The system cannot find the path specified. (os error 3)

[ShichiIzanagi]

Then your penumbra mod folder pathing is not set up or set up wrongly. Please make sure to look at the tool tip next to where you set your penumbra folder. Penumbra > Settings