Canvas3D module was deprecated in Qt 5.12. Depracated modules are no longer maintained. They are provided to keep old source code working, but they can be removed in a future release. We strongly advise against using deprecated modules in new code or project.
To import Qt Canvas 3D QML types, add the following import statement to your
import QtCanvas3D 1.1
见 快速入门 page for further information on how to use Qt Canvas 3D in your application.