---
title: "TYPO3 Exception 1263391473"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1263391473"
source: "Exceptions/1263391473.rst"
modified: "2026-09-16T07:39:08+00:00"
---

# TYPO3 Exception 1263391473

> [!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).

## News

**Exception in news detail view:**

```
#1263391473: The property "falMediaNonPreviews" on the subject was not accessible.
TYPO3\CMS\Extbase\Reflection\Exception\PropertyNotAccessibleException thrown in file /srv/www/typo3/typo3_src-6.2.3/typo3/sysext/extbase/Classes/Reflection/ObjectAccess.php in line 77.

TYPO3\CMS\Extbase\Reflection\ObjectAccess::getProperty(Tx_News_Domain_Model_NewsDefault, "falMediaNonPreviews")

```

**Solution:**

Ensure that plugin.tx_news.features.rewrittenPropertyMapper is **not**
set to 0.

## Flux

Error:

```
> The property "options.Fluidcontent.sorting" on the subject was not accessible.

```

Reason:

```
> Form now supports sorting as a global option that can be used by any implementation; previously fluidcontent added its own but can now delegate this to Flux. This means that from now on you should define options="{sorting: 10}" instead of wrapping the sorting value in a scope like {Fluidcontent: {sorting: 10}}.
> https://github.com/FluidTYPO3/flux/blob/3840921670676f6ca5a8141bee640eeeb3865708/Documentation/Changelog/7.2.2.md

```

Solution:

Update the extension.