Drag and Drop

I have been using the Drag and Drop element and I am running into an issue "Exception - Call to undefined function str_contains()".

This has occured multiple times while using this element and seems to happen when a lot of content is added. For example, the element I am creating has 6 drop zones and 20 text fields that can be dropped into any zone. For this particular example I am also using a background image set to the size of the canvas (900x1200px).

Thanks to h5p, I have created a full site on Waste prevention (more than 60 games) for a big french waste management company.

espace-pedagogique.sydeme.fr

The target is mainly children education. The customer is delighted of the result.

Almost all games have been created with h5p using:

Hello, 
Since an H5P update on Moodle 4.5, the Question Set, Multiple Choice, and Drag and Drop activities are displayed with very ugly icons. It seems that Font Awesome is no longer being displayed. What should I do?

Thanks
Philibert