---
title: "TYPO3 Exception 1295479651"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1295479651"
source: "Exceptions/1295479651.rst"
rendered: "2026-09-26T07:32:33+00:00"
---

# TYPO3 Exception 1295479651 {#typo3-exception-1295479651}

> [!NOTE]
> Below, the TYPO3 community may have provided additional information or
> solutions for this exception. However, these may or may not apply to your
> particular case. If you can provide more information, you should come back
> here and add your experience and solution steps to this issue once you have
> resolved it.
>
> General TYPO3 troubleshooting tips can be found in the *Troubleshooting*
> section in the menu. You can also ask questions and receive support in the
> [TYPO3 Questions category on talk.typo3.org](https://talk.typo3.org/c/typo3-questions/).
>
> To add your experience, click "Edit on GitHub" above and follow the
> ["Edit on GitHub" workflow](https://docs.typo3.org/m/typo3/docs-how-to-document/main/en-us/Howto/EditOnGithub.html#docs-contribute-github-method).
> Also check out
> [our tip on Coding Style and reST](https://docs.typo3.org/permalink/t3exceptions:tip-about-rest-coding-style).

## The default action can not be determined for controller "Foo" {#the-default-action-can-not-be-determined-for-controller-foo}

> #1295479651: The default action can not be determined for controller
> "Foo". Please check
> `\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin()` in your
> `ext_localconf.php`.

This may happen if the third parameter to
`\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin()` is
wrong.

Invalid:

```
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
    'Ext',
    'Foo',
    [FooController::class => ['show']],
    []
);
```

Valid:

```
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
    'Ext',
    'Foo',
    [FooController::class => 'show'],
    []
);
```