Problem with images after update to wordpress 6.3

Hi, after upgrading to WordPress 6.3, almost all images are no longer visible, neither on the site nor in the media library, even though they are present on the server

From the media library, if I click on the thumbnail and then on “edit image”, the image appears.

The issue also affects plugin images/icons in the admin area.

Here is the error: Failed to load resource: the server responded with a status of 503 ()

I tried resetting the permissions of the wp-content/upload folder, disabling all plugins (including the caching one), and activating the default theme, but the problem didn’t resolve.

Do you have any ideas?
Has this happened to anyone else?

Thank you