为什么在使用buildozer来构建kivy的apk时出现错误？

如何解决为什么在使用buildozer来构建kivy的apk时出现错误？

我已经下载了此脚本并运行以安装所有内容。 https://github.com/zaemiel/kivy-buildozer-installer 我完成了所有步骤。但是最后它给出了错误。我应该如何成功构建？ 我在WSL中使用Python 3.6.9。我阅读github问题页面仍然没有帮助。这里缺少什么吗？在youtube上也有人安装而没有任何错误。

此完整错误日志。

[INFO]:    -> directory context /home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools
[INFO]:    -> running python3 setup.py install -O2 --root=/home/mani/kivymd/.buildozer/andro...(and 73 more)
Exception in thread background thread for pid 9111:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py",line 916,in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py",line 864,in run
    self._target(*self._args,**self._kwargs)
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",line 1633,in wrap
    fn(*rgs,**kwargs)
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",line 2557,in background_thread
    handle_exit_code(exit_code)
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",line 2261,in fn
    return self.command.handle_command_exit_code(exit_code)
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",line 861,in handle_command_exit_code
    raise exc
sh.ErrorReturnCode_1:

  RAN: /home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/hostpython3/desktop/hostpython3/native-build/python3 setup.py install -O2 --root=/home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/myapp --install-lib=.

  STDOUT:
Traceback (most recent call last):
  File "setup.py",line 11,in <module>
    import setuptools
  File "/home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setuptools/__init__.py",line 20,in <module>
    from setuptools.dist import Distribution,Feature
  File "/home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setuptools/dist.py",line 36,in <module>
    from setuptools import windows_support
  File "/home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setuptools/windows_support.py",line 2,in <module>
    import ctypes
  File "/home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a/build/other_builds/hostpython3/desktop/hostpython3/Lib/ctypes/__init__.py",line 7,in <module>
    from _ctypes import Union,Structure,Array
ModuleNotFoundError: No module named '_ctypes'


  STDERR:


Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py",line 193,in _run_module_as_main
    "__main__",mod_spec)
  File "/usr/lib/python3.6/runpy.py",line 85,in _run_code
    exec(code,run_globals)
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py",line 1260,in <module>
    main()
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py",line 18,in main
    ToolchainCL()
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py",line 709,in __init__
    getattr(self,command)(args)
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py",line 154,in wrapper_func
    build_dist_from_args(ctx,dist,args)
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py",line 216,in build_dist_from_args
    args,"ignore_setup_py",False
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/build.py",line 577,in build_recipes
    recipe.build_arch(arch)
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py",line 946,in build_arch
    self.install_python_package(arch)
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py",line 965,in install_python_package
    _env=hpenv,*self.setup_extra_args)
  File "/home/mani/kivymd/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py",line 167,in shprint
    for line in output:
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",line 907,in next
    self.wait()
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",line 837,in wait
    self.handle_command_exit_code(exit_code)
  File "/usr/local/lib/python3.6/dist-packages/sh-1.14.0-py3.6.egg/sh.py",Array
ModuleNotFoundError: No module named '_ctypes'


  STDERR:

# Command failed: /usr/bin/python3 -m pythonforandroid.toolchain create --dist_name=myapp --bootstrap=sdl2 --requirements=python3,kivy --arch armeabi-v7a --copy-libs --color=always --storage-dir="/home/mani/kivymd/.buildozer/android/platform/build-armeabi-v7a" --ndk-api=21