Clover Bootloader Issue

Hello Everyone,

Currently, I'm trying to make a bootable usb for hackintosh with terminal and clover. After being secessfull on creating the usb with Mojave, I started to use clover to create the EFF Partation. However, when I click on the usb; it has a Yellow warning sign and not selectable, therefore, I'm confused what went wrong!?

Please Help me