FML Early Loading Process Failed to Find Port for Display

[LTheLetter]

I keep getting FML Early Loading Process failures when trying to start up version 9.1.2 for the Pixelmon Modpack. The launcher also crashes but it says that it failed to find port for display. I've tried looking up solutions such as fixing the JVM argument, but it hasn't worked. I use a Mac, so I was wondering if that's perhaps the problem?

[Hipposgrumm]

The problem is that 1.16.5 is no longer supported on this forum. You will have to ask reddit (and post your crash log along with it).