Seaweed Crash

[04:39:48] [Server thread/WARN]: Failed to handle packet for /122.151.157.243:63387
java.lang.NullPointerException
	at com.bioxx.tfc.Blocks.Flora.BlockWaterPlant.getDrops(BlockWaterPlant.java:68) ~[BlockWaterPlant.class:?]
	at net.minecraft.block.Block.func_149690_a(Block.java:655) ~[aji.class:?]
	at net.minecraft.block.Block.func_149697_b(Block.java:648) ~[aji.class:?]
	at net.minecraft.block.Block.func_149636_a(Block.java:974) ~[aji.class:?]
	at com.bioxx.tfc.Blocks.BlockTerra.func_149636_a(BlockTerra.java:68) ~[BlockTerra.class:?]
	at net.minecraft.server.management.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:299) ~[mx.class:?]
	at net.minecraft.server.management.ItemInWorldManager.func_73082_a(ItemInWorldManager.java:217) ~[mx.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147345_a(NetHandlerPlayServer.java:498) ~[nh.class:?]
	at net.minecraft.network.play.client.C07PacketPlayerDigging.func_148833_a(SourceFile:53) ~[ji.class:?]
	at net.minecraft.network.play.client.C07PacketPlayerDigging.func_148833_a(SourceFile:8) ~[ji.class:?]
	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) ~[ej.class:?]
	at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
[04:39:48] [Server thread/INFO]: gilgamorgh lost connection: TextComponent{text='Internal server error', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null}}
[04:39:48] [Server thread/INFO]: gilgamorgh left the game