Change record status: 
Project: 
Introduced in branch: 
11.3.x
Introduced in version: 
11.3.0
Description: 

\Drupal\Core\Utility\Error::currentErrorHandler is deprecated, use get_error_handler() instead.

The get_error_handler function is added in PHP 8.5. Until Drupal requires PHP 8.5 a polyfill is provided via symfony/polyfill-php85.

Impacts: 
Module developers