Valkyrien Warfare airship creation stack trace

[13:01:34] [Client thread/INFO]: [CHAT] DaPorkchop_ has just earned the achievement [Taking Inventory]
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]: java.lang.NullPointerException
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at ValkyrienWarfareBase.PhysicsManagement.PhysicsObject.grabPlayerField(PhysicsObject.java:700)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at ValkyrienWarfareBase.PhysicsManagement.PhysicsObject.<init>(PhysicsObject.java:111)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at ValkyrienWarfareBase.PhysicsManagement.PhysicsWrapperEntity.<init>(PhysicsWrapperEntity.java:40)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at ValkyrienWarfareBase.PhysicsManagement.PhysicsWrapperEntity.<init>(PhysicsWrapperEntity.java:44)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at ValkyrienWarfareBase.Block.BlockPhysicsInfuser.onBlockActivated(BlockPhysicsInfuser.java:35)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.server.management.PlayerInteractionManager.processRightClickBlock(PlayerInteractionManager.java:477)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.network.NetHandlerPlayServer.processRightClickBlock(NetHandlerPlayServer.java:706)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at ValkyrienWarfareBase.Interaction.CustomNetHandlerPlayServer.processRightClickBlock(CustomNetHandlerPlayServer.java:97)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:68)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:13)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:15)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.util.Util.runTask(Util.java:25)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:742)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536)
[13:02:22] [Server thread/INFO] [STDERR]: [ValkyrienWarfareBase.PhysicsManagement.PhysicsObject:grabPlayerField:707]:   at java.lang.Thread.run(Thread.java:745)
[13:02:22] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
    at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_111]
    at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_111]
    at net.minecraft.util.Util.runTask(Util.java:26) [Util.class:?]
    at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:742) [MinecraftServer.class:?]
    at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687) [MinecraftServer.class:?]
    at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) [IntegratedServer.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536) [MinecraftServer.class:?]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
Caused by: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
    at net.minecraftforge.fml.common.asm.transformers.TerminalTransformer$ExitVisitor.checkAccess(TerminalTransformer.java:166) ~[forgeSrc-1.10.2-12.18.1.2064-PROJECT(Valkyrien-Warfare-Revamped).jar:?]
    at net.minecraftforge.fml.common.asm.transformers.TerminalTransformer$ExitVisitor.systemExitCalled(TerminalTransformer.java:132) ~[forgeSrc-1.10.2-12.18.1.2064-PROJECT(Valkyrien-Warfare-Revamped).jar:?]
    at ValkyrienWarfareBase.PhysicsManagement.PhysicsObject.grabPlayerField(PhysicsObject.java:708) ~[PhysicsObject.class:?]
    at ValkyrienWarfareBase.PhysicsManagement.PhysicsObject.<init>(PhysicsObject.java:111) ~[PhysicsObject.class:?]
    at ValkyrienWarfareBase.PhysicsManagement.PhysicsWrapperEntity.<init>(PhysicsWrapperEntity.java:40) ~[PhysicsWrapperEntity.class:?]
    at ValkyrienWarfareBase.PhysicsManagement.PhysicsWrapperEntity.<init>(PhysicsWrapperEntity.java:44) ~[PhysicsWrapperEntity.class:?]
    at ValkyrienWarfareBase.Block.BlockPhysicsInfuser.onBlockActivated(BlockPhysicsInfuser.java:35) ~[BlockPhysicsInfuser.class:?]
    at net.minecraft.server.management.PlayerInteractionManager.processRightClickBlock(PlayerInteractionManager.java:477) ~[PlayerInteractionManager.class:?]
    at net.minecraft.network.NetHandlerPlayServer.processRightClickBlock(NetHandlerPlayServer.java:706) ~[NetHandlerPlayServer.class:?]
    at ValkyrienWarfareBase.Interaction.CustomNetHandlerPlayServer.processRightClickBlock(CustomNetHandlerPlayServer.java:97) ~[CustomNetHandlerPlayServer.class:?]
    at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:68) ~[CPacketPlayerTryUseItemOnBlock.class:?]
    at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:13) ~[CPacketPlayerTryUseItemOnBlock.class:?]
    at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:15) ~[PacketThreadUtil$1.class:?]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_111]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
    at net.minecraft.util.Util.runTask(Util.java:25) ~[Util.class:?]
    ... 5 more
[13:02:23] [Server thread/INFO]: Saving and pausing game...
[13:02:23] [Server thread/INFO]: Saving chunks for level 'New Worldaaa'/Overworld
[13:02:23] [Server thread/INFO]: Saving chunks for level 'New Worldaaa'/Nether
[13:02:23] [Server thread/INFO]: Saving chunks for level 'New Worldaaa'/The End