Problem building simple exemple with qt 6.6.2

[Ronel_qtmaster]

Hello people.
I have just installed Qt6.6.2 from the official Online Installer.
However, i have a problem with the build of some exemples.I cannot build anything.I am working on windows
here are the errors:

[jsulm]

@Ronel_qtmaster Please post the very first error as text

[Ronel_qtmaster]

@jsulm this is the first error

error: project could not find requested file:

C:/Qt6/Examples/Qt-6.6.2/demos/build-coffee-Desktop_Qt_6_6_2_MinGW_64_bit-Release/.qtc/package-manager/auto-setup.cmake

[mzimmers]

@Ronel_qtmaster does your CMake file have an entry like this?

project(<project_name>VERSION ${VERSION_MAJOR}.${VERSION_MINOR} LANGUAGES C CXX)

[Ronel_qtmaster]

@mzimmers yes it does