qtopcua top-level build error

cmake D:\Qt\src\qt6 -DCMAKE_INSTALL_PREFIX=D:\Qt\qt-dev-vs2019_64-shared -GNinja -DCMAKE_BUILD_TYPE=Release
......
-- Configuring done
CMake Error at D:/Qt/src/build-dev-vs2019_64-shared/qtbase/lib/cmake/Qt6Qml/Qt6QmlMacros.cmake:185 (add_library):
  Cannot find source file:

    PUBLIC_LIBRARIES

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .m .M .mm .h .hh .h++ .hm
  .hpp .hxx .in .txx .f .F .for .f77 .f90 .f95 .f03 .ispc
Call Stack (most recent call first):
  D:/Qt/src/build-dev-vs2019_64-shared/qtbase/lib/cmake/Qt6Qml/Qt6QmlMacros.cmake:496 (qt6_add_qml_module)
  qtopcua/src/imports/opcua/CMakeLists.txt:7 (qt_add_qml_module)


CMake Error at D:/Qt/src/build-dev-vs2019_64-shared/qtbase/lib/cmake/Qt6Qml/Qt6QmlMacros.cmake:185 (add_library):
  No SOURCES given to target: declarative_opcua
Call Stack (most recent call first):
  D:/Qt/src/build-dev-vs2019_64-shared/qtbase/lib/cmake/Qt6Qml/Qt6QmlMacros.cmake:496 (qt6_add_qml_module)
  qtopcua/src/imports/opcua/CMakeLists.txt:7 (qt_add_qml_module)


CMake Generate step failed.  Build files cannot be regenerated correctly.