how add this library to qml

[DjalilBL]

hello :-1: error : Unknown module(s) in QT: 3dcore 3drenderer 3dinput 3dquick this library doesn't exist in qml " import Qt3D 2.0 import Qt3D.Renderer 2.0"

[SGaist]

Hi and welcome to devnet,

What version of Qt ?
What OS ?
How did you install Qt ?

[DjalilBL]

version Qt 5.5
i use Linux
EnLigne installation

[SGaist]

AFAIK, Qt3D was introduced in Qt 5.7, you have to update your Qt version.

Note that Qt 5.5 is more than outdated, you really should consider either the latest LTS or plain latest version of Qt especially for using Qt3D.