Can you try to upload the plugin files, unzip the attached file in your computer and upload the plugin folder to your server using ftp to the wp-content/plugins directory.
Hi Rui and thanks for answer.
I restored my site and tested again to update the theme to the latest version and it works fine . Then considered to update Swift Framework again and the same problems .
The page stopped working.
I saw that the plugin had been updated again yesterday , but it is still something that makes it not work.
I have been running my website again but do not know when I dare to update the plugin.