Error/analytics/errorprocessornotready
From Learnit docs
You may see an error if you have installed the Python learning analytics backend, but the version of Moodle you are using requires a more recent backend. From a shell, do this:
$ sudo -H python3 -m pip install "moodlemlbackend==2.4.*"
Collecting moodlemlbackend==2.4.*
...
Installing collected packages: moodlemlbackend
Found existing installation: moodlemlbackend 2.3.0
Uninstalling moodlemlbackend-2.3.0:
Successfully uninstalled moodlemlbackend-2.3.0
Successfully installed moodlemlbackend-2.4.0
Check the documentation for the correct version of moodlemlbackend to install for your version of Moodle.