Hi,
Looks like some kind of crash when the game is trying to launch…
There is some troubleshooting steps here:
You’ve already done some of those… but I would give a try to step 5 if you haven’t yet.
Diablo III is very “sensitive” to overlays and stuff running in the background. Are you using a Razer mouse and/or keyboard ? if so, see Known Technical Support Issues - [Updated June 21, 2020!] - #2 by Zuvykree
You could also contact Blizzard Support with a ticket… use this link to start the process:
https://us.battle.net/support/en/help/contact/279/ticket