Always run downloaded .exe or .zip files through an online scanner like VirusTotal before attempting to open them on your system or virtual machine.
When prompted for the installer file, select the Minecraft Error 422.exe file you downloaded. Minecraft Error 422 Download For Mac
The original Error 422 mod was built as a .exe file, meaning it does not run natively on macOS without extra software. Step-by-Step Guide to Run Minecraft Error 422 on Mac Always run downloaded