Not able to build this project on Ubuntu 20.04

[chandramohan83]

Project ERROR: Unknown module(s) in QT: webengine webenginecore webenginewidgets webchannel

I am using ubuntu 20.04 and installed webenginecore and corresponding libraries

[Archie3d]

Webengine dependencies are obviously missing. You'll have to troubleshoot your installation and make sure qtwebengine5-dev is installed correctly.

[proton07]

Same problem Using windows 10 and windows 11 with QT 5.15.2 i tried to remove QtWebEngine and installed it once again but the same problem
if i remove those \ from
QT += widgets
webengine
webenginecore
webenginewidgets
~ error disappear but a new problem show up

QWebChannel: No such file or directory
#include

QWebEngineView: No such file or directory
#include
etc