benjaminkott / benjaminkott/bootstrap_package

Timeline shows an indefinable error message for me

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Description

# Linux 5.10.0-21-amd64 / PHP-8.2.8 / Typo3-12.4.8 / bootstrap_package-14.0.7

## I use the content element "Timeline" on 3 different pages in my website. Only on one page do I get this message when I open it:

(1/1) TypeError

BK2K\BootstrapPackage\Icons\AbstractIcon::setPreviewImage(): Argument #1 ($previewImage) must be of type string, null given, called in /var/www/html/vendor/bk2k/bootstrap-package/Classes/DataProcessing/ IconsDataProcessor.php on line 81

I have absolutely no idea how to approach this error message. Any help is welcome. Thanks in advance.

![Timline_Fehler_02](https://github.com/benjaminkott/bootstrap_package/assets/54184518/eb38bca3-b2c7-4a23-9ff1-cdc72c6c33ef)

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