Server crashing

My server is crashing when I start it. Log: http://pastebin.com/8KCwWtrR
I am using spongeforge-1.8.9-1763-3.1.0-BETA-1181 with forge-1.8.9-11.15.1.1763-universal

Mods I am using are:
EssentialCmds-8.1.0
PixelExtras-1.8.9-2.1.1-universal
Pixelmon-1.8.9-4.2.3-universal
TrainerCommands-1.8.9-2.1.0-universal
worldedit-forge-mc1.8.9-6.1.1-dev
spongeforge-1.8.9-1763-3.1.0-BETA-1181

Your SpongeForge is quite a few builds too old probably. Update to latest.

Thanks. That seemed to work.