interactive book

Hello,

I'm encountering an issue with the Interactive Book. The fullscreen button is missing on video players, but only when using Chrome. It works fine on Mozilla Firefox and Safari. Does anyone know what might be causing this, and how to resolve it?

Thank you!

The interactive book content is not responding due to the following error: call to undefined function str_contains(). This occurs only when re-entering the content. According to my research, this is due to the PHP version, which needs to be 8, as I have Moodle version 3.10 and do not have that version of PHP. I would appreciate your prompt attention to this matter. Thank you very much.

I use interactive books fairly frequently, and I have included Course Presentations within an Interactive book before. It seems like it's no longer possible to do this though, the option under the "add content" menu no longer includes course presentation. Is there a fix for this or was it an intentional removal for some reason?