ModModelDefinitionImpl nullpointer exception

[charmesal]

I'm currently trying to get Dynmap to work with a modpack but it crashes when Dynmap enters ModModelDefinitionImpl. It happens after it says it's processing "Placeable Items version null" but all other mods before that also had version null and since it happens when ModSupportImpl.complete is called I assume it's not because of this specific mod. I'll remove Placeable Items and retry and post my findings once I get home.
I'm using:
DynmapBlockScan-3.0-alpha-1-forge-1.12.2 (23-Aug-2018)
Dynmap-HEAD-forge-1.12.2 (23-Aug-2018)
As a side note I noticed that Dynmap-3.0-alpa is no longer on http://www.dynmap.us/builds/DynmapForge/ and there is no DeanmapBlockScan-HEAD version

crashreport

[charmesal]

Update: The same problem occurs when Placeable Items is removed

[charmesal]

Update: I found an older version of Dynmap. Dynmap-3.0-alpha-1-forge-1.12.2 downloaded 20-Aug-2018 so It's 1 revision behind I believe.
That one doesn't crash