TYPO3 Exception 1294585866¶

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 section "Troubleshooting" of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms. (See How to get your TYPO3 Slack account.)

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No class named "..."¶

Check your source code for occurrences of that class name. Usually happens if a hook is registered with a wrong class name/reference.

Possible solution:

Legacy installation:

Try to use the Admin Tools > Maintenance backend module: Rebuild PHP Autoload Information

Composer-based installation:

composer dump-autoload