[Solved] Django 4 Error: 'No time zone found with key'

Problem:

When i am trying to rebuild  my Django 4 Docker container the web service suddenly stopped working and show this error error:

zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key
Asia/Hanoi'

Solution:

Upgrade pytz and tzdata to the latest version by those command-

pip install pytz --upgrade

pip install tzdata --upgrade

If its not working, first uninstall pytz & tzdata by those command

pip uninstall pytz

pip uninstall tzdata

Then install the latest version again-

pip install pytz==2022.2.1   

pip install tzdata==2022.2

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