500 internal server error Elementor

Hi,

I’m making a local page with GeneratePress and Elementor. I have about 5 plugins activated, all updated to the latest version.
What happens to me is that when modifying one of the web pages with Elementor it gives me the following error “500 internal server error” (after thinking about it a lot).
In the rest of the pages it also takes a long time, but at least the modifications are saved.
The thing about not being able to save happens to me only in one of the pages created.
About a week ago the web was working normally, but lately it’s hard to save.

I have deactivated all the plugins and I have been activating them little by little, but it remains the same.
I have changed the theme to Twenty Seventeen, but it gives me the same error.
In the php.ini file I have memory = 128MB.

I don’t understand, why does it happen to me only on one of the pages?
Can you think of something?

Thanks and regards,
Ivan