In the file configuration /etc/nginx/sites-available/seafile.conf I add
add_header Content-Security-Policy "default-src https://mywebsite:443 ";
With this parameter, I can’t no more finalize my user connexion. I mean only the header of my welcome page (after the connexion page) is displayed. Not the content with my left column and the central one with my libraries. Why I need elements from another website than MY website (because this is the reason why I can’t download my welcome page) ? How I can fix it ?
Have a nice day.