wasm: qt 6.4.0 beta 4 does not build apps on windows

This is from qtcreator:
 
H:\Qt\Examples\Qt-6.4.0\quickcontrols2\gallery\CMakeLists.txt:12: error: By not providing "FindQt6.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "Qt6", but CMake did not find one. Could not find a package configuration file provided by "Qt6" with any of the following names: Qt6Config.cmake qt6-config.cmake Add the installation prefix of "Qt6" to CMAKE_PREFIX_PATH or set "Qt6_DIR" to a directory containing one of the above files. If "Qt6" provides a separate development package or SDK, be sure it has been installed.
 
from commandline:
 
CMake Warning at H:/Qt/6.4.0/wasm_32/lib/cmake/Qt6/Qt6Config.cmake:212 (find_package):
Found package configuration file:
 
H:/Qt/6.4.0/wasm_32/lib/cmake/Qt6Core/Qt6CoreConfig.cmake