---
title: "TYPO3 Exception 1390290029"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1390290029"
source: "Exceptions/1390290029.rst"
modified: "2026-09-16T07:39:08+00:00"
---

# TYPO3 Exception 1390290029

> [!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).

## You are trying to use a method on an inaccessible folder.

### Processed directory readonly

We had this error when listing files in the backend. The source of the
problem was that the folder contained image files and the backend wanted
to create and save preview images. The `processed` folder was set to a
second file storage whose root directory was `readonly`. After fixing that
permission problem of the second file storage, everything worked again.

### TYPO3 11.5 - File storage is offline / not found

Got to the backend module **File > Filelist** and check if a file
storage is offline. If so right click on it and choose **Edit** from
the context menu. Check the paths or sources that are configured here.

### TYPO3 7

-   accessed files/folders may be missing (check if the do exist)
-   file storage may be out of webroot (try to move the files into a valid
    file storage)
-   check the same folder in the backend module **File->List** \- maybe some
    Icons will show you that the folder is not accessible
-   check missing folders in typo3temp
-   If the file storage is readonly (Flag **Is writable** not set), then you
    may need to set a **Folder for manipulated and temporary images**
    -> This folder may be located in another file storage, which is
    writeable (eg the non-writable file storage is number 2, a writeable
    storage is number 1, then set this folder value to `1:/_processed_`)