I cannot install with "pip3 install weconnect[Images]"

[Jambo52]

At the end of the installation the following appears:

During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/home/pi/.local/lib/python3.9/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
      main()
    File "/home/pi/.local/lib/python3.9/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "/home/pi/.local/lib/python3.9/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 251, in build_wheel
      return _build_backend().build_wheel(wheel_directory, config_settings,
    File "/tmp/pip-install-g0jhbug7/pillow_821b0937fbe04c219ea2c6ed95f8bcdb/_custom_build/backend.py", line 53, in build_wheel
      return super().build_wheel(wheel_directory, config_settings, metadata_directory)
    File "/tmp/pip-build-env-sdn9vph1/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 434, in build_wheel
      return self._build_with_temp_dir(
    File "/tmp/pip-build-env-sdn9vph1/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 419, in _build_with_temp_dir
      self.run_setup()
    File "/tmp/pip-install-g0jhbug7/pillow_821b0937fbe04c219ea2c6ed95f8bcdb/_custom_build/backend.py", line 47, in run_setup
      return super().run_setup(setup_script)
    File "/tmp/pip-build-env-sdn9vph1/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 341, in run_setup
      exec(code, locals())
    File "<string>", line 1005, in <module>
  __main__.RequiredDependencyException:

  The headers or library files could not be found for jpeg,
  a required dependency when compiling Pillow from source.

  Please see the install instructions at:
     https://pillow.readthedocs.io/en/latest/installation.html

  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip. ERROR: Failed building wheel for pillow Failed to build pillow ERROR: Could not build wheels for pillow, which is required to install pyproject.toml-based projects pi@raspberrypi:~ $

I uninstalled pip, pip3, python and pillow and reinstalled everything, but I always get this message. What am I doing wrong? Greetings from Cologne Norbert

[tillsteinbach]

Pillow needs a library for handling jpegs, you probably only need to install libjpeg

[Jambo52]

I installed libjpeg and all error messages are gone. Thank you for the tip. But now I have found that I don't have to install WeConnect-python but WeConnect-mqtt for FHEM. Unfortunately that doesn't work and I'm starting a new thread on the MQTT site.