具体流程:
1. Installed latest version of Clover v4220
2. NVWebDriverLibValFix.kext should be in /Library/Extensions (Install using kext beast)
3. Lilu.kext & NvidiaGraphicsFixup.kext in Clover/kexts/Other/
4. apfs.efi & OsxAptioFixDrv-64.efi & EmuVariableUefi-64.efi in Clover/drivers64UEFI/
5. NvidiaWeb selected under Clover Configurator -> System Parameters
6. Used Clover Configurator to have iMac18,3 SMBIOS
7. CSRActiveConfig was 0x67
8. Installed Nvidia Web Driver and ignored the error.