Administrator
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`FitTrackee fails to start`
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- Check the database URL in `Environment variables <../installation.html#envvar-DATABASE_URL>`__ if the following error is displayed in **gunicorn** logs:
.. code::
sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:postgres
It must start with `postgresql://` (engine URLs starting with `postgres://` are no longer supported).
