Hello. (Sorry for my bad english, I do not master the language very well... And also if I am a double post)

I would like your help, because there is little, Krita 3.0 has ceased to operate. Krita had a black screen and showed this message :
"Windows cannot find (the folder)Check that you enter the correct name, and then try again."

I know that you have warned that'he could have that kind of bug but yet, he walked again yesterday. I do not know what to do... T.T