Excel-Import does not work

[minnten]

Which component is affected?

Import

Did the issue occur at ClassQuiz.de, or on a self-hosted instance?

On ClassQuiz.de

How can the issue be reproduced?

When I try to add a new Quiz with the *.xlsx template, I get an error with the unspecific answer "something went wrong"

Here is a example-file ClassQuizImportTemplate.xlsx

Describe the bug (with screenshots if possible)

The import does not take place.

Device

Laptop/Notebook

Operating System

Arch Linux

Browser

Firefox 128.0