The solution that fixed mine was disabling the both cross play functions.
Just tried to create a 4th character on August 28th and have crashed half a dozen times. Looks like the first report of this on this forum was almost 3 months ago and issue is still persisting for some. Please look into fixing whatever is causing this.
Yes… the unistall of the game worked for about 5 days. Started happening again. This is ridiculous. But again … Blizzard .