"Still waiting for root device" + Prohibited sign during the installation.

Hello guys !
I'm new in the Hackintosh univers, since last week I'm trying to install MacOS Ventura on my computer but during the installation I got a problem "Still waiting for root device" with a prohibited sign. I have done a lot of things from the OpenCore documentation and forum. But I always have the same problem. I'm plugged in a USB2 port with a USB2 flashdrive, I have already try with another one.
Thank you for your help !