---
title: "TYPO3 Exception 1253175643"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1253175643"
source: "Exceptions/1253175643.rst"
rendered: "2026-09-28T10:25:33+00:00"
---

# TYPO3 Exception 1253175643 {#typo3-exception-1253175643}

> [!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 argument type for parameter $parameter of method ... could not be detected. {#the-argument-type-for-parameter-parameter-of-method-could-not-be-detected}

> 1253175643: The argument type for parameter $parameter of method
> Tx_yourExtensionKey_Controller_yourController->yourAction() could not
> be detected.

The GET/POST vars to **action parameter mapping** works only for **objects** or **arrays** and **not for strings**.

To get an string argument you have to fetch it by your own from the
request object in your action method:

```
if ($this->request->hasArgument('parameter')) {

    $keyword = $this->request->getArgument('parameter');

}
```