Forge fails to launch. Reaches about halfway through "Preparing", then stops.
Debug log: https://pastebin.com/vKReWc6S
Output log: https://pastebin.com/EB49ZN9F
Running Forge 1.18-forge-38.0.17 on macOS Mojave 10.14.6
Those three errors are what is making the IRCE return null and kicking them. Not sure what more the debug log will give but at least you know for sure the issue is happening when those three functions try to run. So process of deduction.