Django: ValueError: unable to configure handle "loggers"
David Y.
—The Problem
You are trying to configure logging for your Django application, but keep getting the following error message:
ValueError: Unable to configure handler 'loggers'
This is your logging configuration dictionary in settings.py:
import os LOGGING = { "version": 1, "disable_existing_loggers": False, "root": { "handlers": ["console"], "level": "WARNING", }, "handlers": { "console": { "class": "logging.StreamHandler", }, "loggers": { "django": { "handlers": ["console"], "level": os.getenv("DJANGO_LOG_LEVEL", "INFO"), "propagate": False, }, }, }, }
What is the cause of this error and how do you fix it?
The Solution
The error is caused by a mistake in the structure of the logging dictionary. In the dictionary above, loggers is an element of handlers, but it should be a top-level element, per the Django documentation. A bare-bones LOGGING dictionary should be structured as follows:
LOGGING = { 'version': 1, 'disable_existing_loggers': False, 'formatters': { # add formatters here (optional) }, 'handlers': { # add handlers here }, 'loggers': { # add loggers here }, }
Here is a correctly indented version of the LOGGING dictionary:
import os LOGGING = { "version": 1, "disable_existing_loggers": False, "root": { "handlers": ["console"], "level": "WARNING", }, "handlers": { "console": { "class": "logging.StreamHandler", }, }, "loggers": { "django": { "handlers": ["console"], "level": os.getenv("DJANGO_LOG_LEVEL", "INFO"), "propagate": False, }, }, }
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