New example httpserver/colorpalette fails to configure on wasm_singlethread

/6.5.0/wasm_singlethread/bin/qt-cmake -S /home/qt/RTA/Qt_6.5.0/Examples/Qt-6.5.0/httpserver/colorpalette -B /home/qt/RTA/Qt_6.5.0/Examples/Qt-6.5.0/httpserver/colorpalette/bld_wasm_singlethread -GNinja 

CMake Error at CMakeLists.txt:13 (find_package):
-- Using Qt bundled ZLIB.
-- Found WrapZLIB: TRUE
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE
-- Using Qt bundled PCRE2.
-- Found WrapPCRE2: TRUE
-- Performing Test HAVE_GETTIME
-- Performing Test HAVE_GETTIME - Success
-- Found WrapRt: TRUE
-- Found GLESv2: ON
-- Performing Test HAVE_EGL
-- Performing Test HAVE_EGL - Success
-- Found EGL: /opt/emsdk/upstream/emscripten/cache/sysroot/include (found version "1.5") 
-- Using Qt bundled PNG.
-- Found WrapPNG: TRUE  
-- Using Qt bundled Harfbuzz.
-- Found WrapHarfbuzz: TRUE
-- Using Qt bundled Freetype.
-- Found WrapFreetype: TRUE
-- Using Qt bundled Jpeg.
-- Found WrapJpeg: TRUE
-- Could NOT find Qt6Concurrent (missing: Qt6Concurrent_DIR)
CMake Error at CMakeLists.txt:13 (find_package):
  Found package configuration file:
    /home/qt/RTA/Qt_6.5.0/6.5.0/wasm_singlethread/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 required Qt component "Concurrent".
  Expected Config file at
  "/home/qt/RTA/Qt_6.5.0/6.5.0/wasm_singlethread/lib/cmake/Qt6Concurrent/Qt6ConcurrentConfig.cmake"
  does NOT exist
  Configuring with --debug-find-pkg=Qt6Concurrent might reveal details why
  the package was not found.
  Configuring with -DQT_DEBUG_FIND_PACKAGE=ON will print the values of some
  of the path variables that find_package uses to try and find the package.
-- Configuring incomplete, errors occurred!
See also "/home/qt/RTA/Qt_6.5.0/Examples/Qt-6.5.0/httpserver/colorpalette/bld_wasm_singlethread/CMakeFiles/CMakeOutput.log".
Compilation failed for /home/qt/RTA/Qt_6.5.0/Examples/Qt-6.5.0/httpserver/colorpalette