---
title: "TYPO3 Exception 1309255651"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1309255651"
source: "Exceptions/1309255651.rst"
rendered: "2026-09-28T10:25:33+00:00"
---

# TYPO3 Exception 1309255651 {#typo3-exception-1309255651}

> [!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).

## Invalid type encountered: "..." {#invalid-type-encountered}

The provided phpdoc annotation contains a type that is not recognized.

This can e.g. happen if you model contains properties of the type `Date` instead
of `DateTime` \- edit the model and make sure that only known and valid types are used.

Known and valid types are PHP simple types (like `int` or `float`) or class names.

Take care af annotations in getters, setters and class-property
declarations.