1.12.2 mod crash

[Reblebro4200]

This seems to happen randomly but not too long after I load up a server. I will be running around a bit in loaded chunks, not loading more, and my entire game crashes.

I know XRay doesn't have any problems because it happens without it.
This is a technic pack called "Pokecentral"

[Dyiing]

Do you have enough RAM allocated? Otherwise please attach the crash log

[Reblebro4200]

@dyiing How much RAM should I allocate? I noticed it happens ONLY when I load chunks now, I sometime load chunks accidently and it crashes.

[Reblebro4200]

@dyiing I allocated 12GB of ram and the problem persists.
Logs are here.

[Dyiing]

It looks like it is crashing due to an entity spawned by Pixelmon. Pixelmon has been known to cause issues with Aristois but not always