Class error with slider extensions under Typo3 11.5.26

Hello,

I upgraded my installation from Typo3 9.5.16 to Typo3 11.5.26. Now the extension WS-Slider 0.9.13 delivers errors like
Class ‘WapplerSystems\WsSlider\Hooks\FlexFormEnhancerHook’ not found
when I want to populate a page with the slider.

Previously I was using ws_flexslider, which is not available for 11.5.26.

If I install the “hh_slider 0.2.8” extension instead, then I have a similar class error

“Class ‘HauerHeinrich\HhSlider\Hooks\PageLayoutViewDrawItem’ not found”

With the difference that I can no longer edit any of the pages.

How can the problem be solved? Or can someone recommend me a slider extension that runs on 11.5.26 and with which I can use images plus text content and links similar to ww_flexslider?

I upgraded my installation from Typo3 9.5.16 to Typo3 11.5.26. Now the extension WS-Slider 0.9.13 delivers errors like

Class ‘WapplerSystems\WsSlider\Hooks\FlexFormEnhancerHook’ not found

when I want to populate a page with the slider.

Previously I was using ws_flexslider, which is not available for 11.5.26.

If I install the “hh_slider 0.2.8” extension instead, then I have a similar class error
“Class ‘HauerHeinrich\HhSlider\Hooks\PageLayoutViewDrawItem’ not found”

With the difference that I can no longer edit any of the pages.

How can the problem be solved? Or can someone recommend me a slider extension that runs on 11.5.26 and with which I can use images plus text content and links similar to ww_flexslider?

Thanks
James