🌻 Lovelace UI • Minimalist

how can i use the simple-thermostat in the UIM?
How can i use other Plugin from HACS ?

Plugin Link here in the board: Lovelace: Simple thermostat card

Error: Custom element doesn’t exist: simple-thermostat.

yaml code:

  - type: horizontal-stack
    cards:
      - type: "custom:simple-thermostat"
        entity: climate.mainhallway_hmipbwth_thermostat

I think he has a problem with the type: type: "custom:simple-thermostat"
he searching in the folder: ui_lovelace_minimalist/custom_cards/

Thanks