Server Error

---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 3/30/16 12:36 AM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: forestry/api/genetics/IFlowerAcceptableRule
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:348)
	at cpw.mods.fml.common.Loader.identifyMods(Loader.java:340)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:489)
	at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:314)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:117)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
Caused by: java.lang.ClassNotFoundException: forestry.api.genetics.IFlowerAcceptableRule
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 9 more
Caused by: java.lang.NullPointerException
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
	... 11 more


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Linux (amd64) version 3.10.77
	Java Version: 1.8.0_77, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 352835384 bytes (336 MB) / 519110656 bytes (495 MB) up to 3113877504 bytes (2969 MB)
	JVM Flags: 9 total; -Xms512m -Xmx3072M -XX:PermSize=256m -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:+CMSClassUnloadingEnabled -XX:ParallelGCThreads=2 -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 6 mods loaded, 0 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
		mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
		FML{7.10.99.99} [Forge Mod Loader] (minecraft.jar)
		Forge{10.13.4.1558} [Minecraft Forge] (minecraft.jar)
		CodeChickenCore{1.0.7.47} [CodeChicken Core] (minecraft.jar)
		NotEnoughItems{1.0.5.118} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.118-universal.jar)
		ThaumicTinkerer-preloader{0.1} [Thaumic Tinkerer Core] (minecraft.jar)
	Profiler Position: N/A (disabled)
	Is Modded: Definitely; Server brand changed to 'fml,forge'
	Type: Dedicated Server (map_server.txt)