qt3d/quick3d examples not compiling with Commercial Debian binaries

/opt/qt-6.3.1/x86_64-linux-gnu/bin/qt-cmake -S /home/qt/RTA/Qt_6.3.1/Examples/Qt-6.3.1/quick3d/reflectionprobes -B /home/qt/RTA/Qt_6.3.1/Examples/Qt-6.3.1/quick3d/reflectionprobes/bld_gcc_64 -GNinja 

CMake Error at CMakeLists.txt:12 (find_package):
-- The CXX compiler identification is GNU 9.3.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - yes
-- Found Threads: TRUE  
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE  
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so   
-- Found WrapOpenGL: TRUE  
-- Found XKB: /usr/lib/x86_64-linux-gnu/libxkbcommon.so (found suitable version "0.10.0", minimum required is "0.5.0") 
-- Found WrapVulkanHeaders: /usr/include  
-- Could NOT find Qt6Quick3D (missing: Qt6Quick3D_DIR)
CMake Error at CMakeLists.txt:12 (find_package):
  Found package configuration file:
    /opt/qt-6.3.1/x86_64-linux-gnu/lib/cmake/Qt6/Qt6Config.cmake
  but it set Qt6_FOUND to FALSE so package "Qt6" is considered to be NOT
  FOUND.  Reason given by package:
  Failed to find Qt component "Quick3D".
  Expected Config file at
  "/opt/qt-6.3.1/x86_64-linux-gnu/lib/cmake/Qt6Quick3D/Qt6Quick3DConfig.cmake"
  does NOT exist
-- Configuring incomplete, errors occurred!