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Common development errors
This page is for any error you have seen more than a couple of times, as this is a sign that other people working on the project, will at some point also encounter it, at which point, you can link them to this page for the fix.
ValueError: You have multiple authentication backends configured and therefore must provide the backend
argument or set the backend
attribute on the user.
Context: after starting the webapp
Fix: The app in development mode requires a super-user. To install one run autoreduce-webapp-manage loaddata super_user_fixture
There's nothing at http://localhost:7900
You need to manually port forward 7900 in VSCode.
I don't see the browser after going to http://localhost:7900
Check that ~/.autoreduce/selenium_tests/config.json
is set to "run_headless": false
. This should not be committed or it will break the unit tests.
Check the output of docker ps
- you may have some stray queue processor consumers connected that are processing the message before the one you are debugging gets to. ActiveMQ goes around in a round-robin style so you may be seeing every 2nd/3rd/etc runs depending on how many leftover consumers there are.
The debugging uses 2 ports:
- 5678 for the queue processor
- 5679 for the web app
If the container for either of those has not been killed properly it will not free the port. In this case just manually docker kill
the one that is taken.
Note: This is also documented by RAL's DataGateway-API
If you get the following error when starting a package of autoreduce, changes need to be made to your Python environment:
ModuleNotFoundError: No module named 'urlparse'
Explanation of the cause for this issue can be found in a
Python ICAT issue. Essentially,
the version of setuptools
used must be < 58.0.0. If you have
already installed the packages dependencies (via pip install
), you will need to re-install setuptools
(using a suitable version) and re-install Python ICAT so it can be rebuilt correctly. The following commands can be used for this process:
# Uninstall and re-install setuptools using a version < 58.0.0
pip uninstall -y setuptools
pip install 'setuptools<58.0.0'
# Re-install Python ICAT so it can be built properly
pip uninstall -y python-icat
pip install python-icat=0.21.0