[5.x]: Error message logging not working

[bencroker]

What happened?

Calling Craft::error() appears to have no effect in Craft 5.0.5.

Steps to reproduce

1. Enable devMode.
2. In a custom module, call Craft::error('Test error') and Craft::info('Test info') in the init() method.
3. Visit the site.
4. Open the web-****-**-**.log file.

Expected behavior

Both test messages should be written to the log file.

[web.ERROR] [application] Test error
[web.INFO] [application] Test info

Actual behaviour

Only the info message is written to the log file.

[web.INFO] [application] Test info

Craft CMS version

5.0.5

[MatthiasBrodelet]

I have been breaking my head over this issue.
The weird part is that Sentry is able to catch these errors even though they are not visible in the logs.

[timkelty]

Confirmed the described behavior.

Errors are also missing with Dev Mode off, but warnings are logged.
Most likely related to the Monolog update that came with Craft 5.

Working on it now!

[bencroker]

Thanks, Tim!

[brandonkelly]

Fixed in 5.0.6! Thanks again.