An Error message encountered

[dvd64]

Thanks for your aeneas.
I installed the software at https://github.com/sillsdev/aeneas-installer.
There is no problem when using: python -m aeneas.tools.execute_task.But when I use python -m aeneas.tools.execute_job:
Put the audio files (assuming the format is m4a) and the corresponding text files in the same folder AAA . Place both folder AAA and the config.txt file in folder BBB. The content of the config.txt file (in UTF - 8 format) is as follows:
is_hierarchy_type=flat
is_hierarchy_prefix=AAA/
is_text_file_relative_path=.
is_text_file_name_regex=..txt
is_text_type=plain
is_audio_file_relative_path=.
is_audio_file_name_regex=..m4a

os_job_file_name=job_srt
os_job_file_container=unpacked
os_job_file_hierarchy_type=flat
os_job_file_hierarchy_prefix=AAA/
os_task_file_name=$PREFIX.srt
os_task_file_format=srt
job_language=en
job_description=aeneas example job

Create a new folder CCC to store the new SRT files. Place folder CCC within folder DDD, where folder BBB also resides.
Type "cmd" in the address bar of folder DDD.
Then type:python -m aeneas.tools.execute_job BBB CCC

The following error always appears:
[INFO] Validating the container (specify --skip-validator to bypass)...
[ERRO] The given container is not valid:
[ERRO] Errors:
Required parameter 'is_hierarchy_type' not set.

I can't find why,although I read the contents in https://www.readbeyond.it/aeneas/docs/clitutorial.html
Could you help me?thank you very much.