"WatchdogMailer" logger runs too early for @date.formatter to be injected, causing a fatal error on cache invalidation.

Problem/Motivation

After a lot of debugging and trial and error, we finally found the original issue of 🐛 $hook must be of type callable, string given, called in ModuleHandler Active . It seems, that the "WatchdogMailer" logger runs too early for the "@date.formatter" to be injected, causing a fatal error on cache invalidation.

Steps to reproduce

• Install module
• Run \Drupal::service('cache.discovery')->deleteAll() / invalidateAll()

Proposed resolution

Use the php native Date formatter.

Remaining tasks

User interface changes

API changes

Data model changes