Installation xdebug maximum function nesting level error

This article provides a fix for the xdebug maximum function nesting level error during installation.


During Adobe Commerce installation, a message similar to the following displays:

PHP Fatal error: Maximum function nesting level of '100' reached, aborting! in <path>/ClassLoader.php

It is strongly recommended that you DO NOT USE xdebug on a Production environment!


There is a known issue with xdebug that can affect Adobe Commerce installations or access to the storefront or Commerce Admin after installation.

For details, see Known issue with xdebug in our support knowledge base.