Strange problem after upgrading from Buster to testing.

Hi all, I am wondering if this should be sent to the Debian accessibility list, but any way, I am in the prosses of installing Debian buster, but wanted to upgrade to testing. I have a very strange problem happens where the system will not boot, so tried to install the bulzie testing with the

Update on my update problem with gnome system.

Mornning all, A few days ago I reported a  problem whare the gnome testing system which I am now using to write this message.  Here is the resault. I did a clean install of the system using the alfa testing image.  I then edited the sources list and changed the lines from buster to