Backend preview cannot be rendered with PHP 8(.1)

[TheNaderio]

Version(s) affected:
2.0.6

Description

How to reproduce

1. composer require hoogi91/charts --no-dev
2. Create diagram data
3. create chart content element (line, bar, ... doesn't care)
4. open page in site-view

Possible Solution

Update code to be PHP >8 compatible

Additional context
If installed without --no-dev, the "spreadsheets" extension will be installed and you cannot even create the diagram-data record due to PHP 8 errors

[hoogi91]

Hey @TheNaderio,

thanks for your report. I updated the required PHP version in latest release 3.0.0 and also upgraded the code to be compatible with PHP >8.1.

Due to the fact that the issue was only visible when PHP's error reporting was considering deprecations I just fixed it for newer version. If you are already on TYPO3 v11 you should be able to simply upgrade to v3 of this library 😄