[HELP] New OpenCore install - 4x inserted ACPI table has length mismatch errors

Following Dortania's guide, OpenCore seems to be starting up but it won't boot my MacOS install, rather just starts the installer disk from the thumb drive. I tried choosing startup disk as my Mac from within the startup disk's Disk Utilities option, but no luck.

Error message I get on the second screen after starting EFI on OpenCore thumb drive is:

OCA: Inserted ACPT table has length mismatch 122263 vs 55758258 OC: Failed to add ACPT SSDT-AWAC.aml - Invalid Parameter OCA: Inserted ACPT table has length mismatch 123604 vs 55758258 OC: Failed to add ACPT SSDT-EC-USBX-DESKTOP.aml - Invalid Parameter OCA: Inserted ACPT table has length mismatch 122502 vs 55758258 OC: Failed to add ACPT SSDTPLUG-DRTNIA.aml - Invalid Parameter OCA: Inserted ACPT table has length mismatch 122230 vs 55758258 OC: Failed to add ACPT SSDT-PMC.aml - Invalid Parameter 

System specs:

Intel - Core i7-8700K 3.7 GHz 6-Core Processor Asus - ROG MAXIMUS X HERO (WI-FI AC) ATX LGA1151 4x G.Skill - TridentZ RGB Series 8 GB DDR4-4000 Samsung - 970 Evo 1 TB M.2-2280 Solid State Drive Sapphire - Radeon RX 580 8 GB PULSE Video Card