Yes, it worked! The first site built in Drupal 9 is up and running!!!

All right, well, this was really a breeze. The site built in Drupal 8 by and for our website manager and builder, websites.sillybutterfly.nl has been transferred to Drupal 9. It is a small, compact site, without bells and whistles, so it was really simple. The difference between D8 and D9 is really not that big. But it was obvious that this would be the first site in D9. And so it worked!!!