---
title: "TYPO3 Exception 1231267498"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1231267498"
source: "Exceptions/1231267498.rst"
modified: "2026-09-16T07:39:08+00:00"
---

# TYPO3 Exception 1231267498

> [!NOTE]
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>
> General TYPO3 troubleshooting tips can be found in the *Troubleshooting*
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> To add your experience, click "Edit on GitHub" above and follow the
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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).

## Invalid cache backend option `$optionKey` for backend of type `static::class`

Most likely your cache configuration and the configured
backend do not match the configured options. Change or remove the options and try again.

If you change the backend to NullBackend, make sure you remove the
options.

This setup will throw the exception:

```
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\MemcachedBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object']['options'] = array('servers' => array('localhost:11211'),);
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\NullBackend';

```

If you want to set it to `NullBackend`, do it like this:

```
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object'] = array('backend' => 'TYPO3\\CMS\\Core\\Cache\\Backend\\NullBackend');

```

or clear the options:

```
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object']['options'] = array();
```