mask installieren über den Extension Manager und bei "Include static (from extensions)":

  • Mask (mask)

Unter Admin Tools > Settings > Extension Configuration bei mask folgende Einstellungen setzen:

Genral 

general.json (file [json]):
fileadmin/templates/mask_project/Resources/Private/Mask/mask.json

Frontend 

frontend.content (folder): fileadmin/templates/mask_project/Resources/Private/Mask/Frontend/Templates/
frontend.layouts (folder): fileadmin/templates/mask_project/Resources/Private/Mask/Frontend/Layouts/
frontend.partials (folder): fileadmin/templates/mask_project/Resources/Private/Mask/Frontend/Partials/

Backend 

backend.backend (folder): fileadmin/templates/mask_project/Resources/Private/Mask/Backend/Templates/
backend.layouts_backend (folder): fileadmin/templates/mask_project/Resources/Private/Mask/Backend/Layouts/
backend.partials_backend (folder): fileadmin/templates/mask_project/Resources/Private/Mask/Backend/Partials/
backend.preview (folder): fileadmin/templates/mask_project/Resources/Public/Mask/