Cant Creat New H5P

Hello, I have set up a new Wordpress site. Latest version. 6.1.1. Nothing is installed yet. I just installed H5P, LearnPress and Elementor. I am using a free theme. astra

I enter the creation page to add a new H5P content. I'm doing the H5P content. (For example Question Set, Course Pre. or Drag Drop i try many of them...) Then when I press the "Create" button on the right side of Wordpress, the page reloads and the content disappears. A new content is not saved.

What can I do, do you know?

My PHP 7.4

Thanks