Hello, I can't update content on my Homepage. Doing this the page is always locked (I'm the website administrator with full access).

1. I unlock the page and login.

2. Once I'm logged I modify the page. After that, when I save, the wheel start to turn and doesn't save. I see "Request failed with status code 404"

3. When I logout from the page I see: "Page not foud".

Note:

• All others pages are fine, I open and save without problems. Database also fine. Cache cleared.
• I upgraded today to last Joomla 5.0.3 and Page Builder Pro 5.2.7 but the issue still.
• I saved a Homepage copy but problem still.
• I reinstalled the Page Builder Pro extension but no changes.
• Now if I work on Frontend Editor I can save but on Normal Editor (clicking Page Name) not.

Do you know the reason?

Thank's a lot, Lele