Fatal error: method_exists(): The script tried to execute a method or access a property of an incomplete object.

Monolog version 2|3

When NormalizeFormatter use method_exists on incomplete object it cause fatal error.

I found the problem in logs without any stacktrace information. It can happen when unserialize wrong response from service or unserialize outdated data from session. Anyway NormalizeFormatter should not make fatal error even on corrupted data.