Minecraft: 1.12.2
Forge: 14.23.4.2705 (recommended) - (9/20/2018)
Featured Msg: [11:30:52] [Server thread/FATAL] [mca]: MCA detected a crash and attempted to report it, but failed to do so! asp.radix-shock.com
MCA Version: MCA-1.12.x-5.3.1-universal
Crash: https://pastebin.com/JhbwUikR

I was playing suddenly closes the game. First time this happens to me, but since the message said it could not report the crash, I decided to send it. :)

EDIT: It has happens regularly after a few minutes in play. =/
EDIT2: This crash is being caused by being in conjunction with JourneyMap. (At least that's what I tested. This crash only happens when I play it along with JourneyMap)