Boot problem

hi guys, this is my second Hackintosh installation, after following the OpenCore procedure step by step, I have this problem “ failed to start OpenCore image- already started” . Can anyone tell me what I'm doing wrong?
ps.

my build is

-z370

-i5-9600k (coffee lake) with igpu (i have an rtx2060 but i disable it already in config.plist)

Author: @Legolas347_