---
title: "Important: #71521 - Internal changes in CommandController"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:important-71521"
source: "Changelog/8.0/Important-71521-InternalChangesInCommandController.rst"
typo3-version: "8.0"
typo3-major: 8
type: "important"
issue: 71521
forge: "https://forge.typo3.org/issues/71521"
tags: ["PHP-API", "ext:extbase"]
rendered: "2026-09-23T19:53:57+00:00"
---

# Important: #71521 - Internal changes in CommandController {#important-71521}

See [forge#71521](https://forge.typo3.org/issues/71521)

## Description {#description}

The `CommandController::processRequest()` method has been changed to initialize arguments and output.

If this method was overridden without calling the parent method, these changes must be copied to prevent errors.