When i edit a page i get a blank page

Do you have an idea ?

After testing I tried via the database to copy/paste the text field from the sppagebuilder table to a new blank page and I always edit a blank page where I am asked to create the first line.. .

It's blocking.

Hello
Can you look. I have provided you with an online version. You will see if I edit the home page on SPPage Builder I have a blank page ... Thank you

Hello and thank you for the information.
But it's not from PHP version. I downgraded to version 7.4.x and it's the same.
I tested on 2 different browsers + clear cache.

Thanks

Hello,
I will provide you with the FTP codes of the project below if necessary.

Hello, I followed your link and I still have the problem.

I disabled optional extensions to leave only Joomla and SPPageBuilder. I deactivated the plugin for managing cookies. I don't have CSS and JS compression enabled. I'm on the basic Helix template.

On the other hand, if I go through the administration interface then System / Template and click on shaper_helixultimate then the Template Options button, I have the rendering without being able to touch the content. Because these are only the framework settings and not the content of the home page.

I did my tests on PHP 7.4.x

Thanks

Do you have another idea?

???