interfaceframework examples not compiling

/home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/bin/qt-cmake -S /home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics -B /home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics/bld_gcc_64 -GNinja

-- 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") 
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
-- Using installed ifcodegen found at: /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen
-- Using installed ifcodegen templates found at: /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./ifcodegen-templates
-- Using installed ifcodegen virtualenv found at: /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen/qtif_qface_virtualenv
-- Running ifcodegen for /home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics/instrument-cluster.qface with template frontend
CMake Error at /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/lib/cmake/Qt6InterfaceFramework/Qt6InterfaceFrameworkMacros.cmake:378 (message):
  Error while running the ifcodegen:
  /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen/qtif_qface_virtualenv/bin/python
  /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen/generate.py -T
  /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./ifcodegen-templates
  --template=frontend --force
  /home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics/instrument-cluster.qface
  /home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics/bld_gcc_64/frontend/frontend
  Could not find platform independent libraries <prefix>
  Could not find platform dependent libraries <exec_prefix>
  Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
  Python path configuration:
    PYTHONHOME = (not set)
    PYTHONPATH = (not set)
    program name = '/home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen/qtif_qface_virtualenv/bin/python'
    isolated = 0
    environment = 1
    user site = 1
    import site = 1
    sys._base_executable = '/home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen/qtif_qface_virtualenv/bin/python'
    sys.base_prefix = '/usr'
    sys.base_exec_prefix = '/usr'
    sys.executable = '/home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/./libexec/ifcodegen/qtif_qface_virtualenv/bin/python'
    sys.prefix = '/usr'
    sys.exec_prefix = '/usr'
    sys.path = [
      '/usr/lib64/python38.zip',
      '/usr/lib64/python3.8',
      '/usr/lib64/lib-dynload',
    ]
  Fatal Python error: init_fs_encoding: failed to get the Python codec of the
  filesystem encoding
  Python runtime state: core initialized
  ModuleNotFoundError: No module named 'encodings'
  Current thread 0x00007f29d8c83100 (most recent call first):
  <no Python frame>
Call Stack (most recent call first):
  /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/lib/cmake/Qt6InterfaceFramework/Qt6InterfaceFrameworkMacros.cmake:95 (qt6_ifcodegen_generate)
  /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/lib/cmake/Qt6InterfaceFramework/Qt6InterfaceFrameworkMacros.cmake:446 (internal_ifcodegen_import)
  /home/johanna/RTA/Qt_6.3.2/6.3.2/gcc_64/lib/cmake/Qt6InterfaceFramework/Qt6InterfaceFrameworkMacros.cmake:452 (qt6_ifcodegen_extend_target)
  frontend/CMakeLists.txt:16 (qt_ifcodegen_extend_target)
-- Configuring incomplete, errors occurred!
See also "/home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics/bld_gcc_64/CMakeFiles/CMakeOutput.log".
See also "/home/johanna/RTA/Qt_6.3.2/Examples/Qt-6.3.2/interfaceframework/qface-tutorial/chapter1-basics/bld_gcc_64/CMakeFiles/CMakeError.log".