---
title: "TYPO3 Exception 1561583127"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1561583127"
source: "Exceptions/1561583127.rst"
modified: "2026-09-16T07:39:08+00:00"
---

# TYPO3 Exception 1561583127

> [!NOTE]
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>
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> Also check out
> [our tip on Coding Style and reST](https://docs.typo3.org/permalink/t3exceptions:tip-about-rest-coding-style).

## TYPO3 10.4.28 - 2020-05-25

Exception message:

> InvalidArgumentException: TypoScriptFrontendController must be constructed with a valid SiteLanguage object or a resolved site in the current request as fallback. None given.

### Situation

The `Preview` section of a flux content element used `<f:cObject>` to access a TypoScript-defined function. Because no TSFE is available in the backend, one is created and that brings this error

### Solution

Workaround: Do not use `<f:cObject>` in backend previews.

In TYPO3v11 this has been fixed with [https://forge.typo3.org/issues/91511](https://forge.typo3.org/issues/91511), but that change has not been backported to v10.