It's in bulgarian and there is nothing really to read. The screenshots show that the update process stuck and the buttons on the second screenshot are grayed out and can't be clicked.
I had to kill avast processes and run it again to get it working without restarting my PC. Now the update process is working as it should but the next time when this occur it will be good to have an option to stop the updating process from the avast! GUI.
Regards,
Georgi