Lovelace UI - custom card error

Configuration Frontend
1

Hello

In my config, I have 3 custom cards that works fine :

  • mini-climate-card-bundle.js
  • meteo-france-weather-card.js
  • mini-graph-card-bundle.js

When I try to add a fourth custom card, I have an error in the UI saying ‘Custom element not found’ - only for that fourth (and fifth…) custom card

  • The .js is correctly added in the www subdir (as the 3 that works)
  • and added as resources in the ui-lovelace.yaml (as the 3 that works)
  • Lovelace mode is yaml
  • Server as been stopped and restarted
    The cards I try to add are :
    • vertical-stack-in-card.js
    • multiple-entity-row.js

Any idea about where to search ?
Are the number of custom card limited ?

Thanks for your advice and help