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HELP my forge server was doing fine but one day it stopped working and it had the same mods Here is the crash report

---- Minecraft Crash Report ----
// Don't do that.

Time: 8/15/14 10:50 AM
Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.ClassNotFoundException: net.techbrew.journeymap.JourneyMap
at cpw.mods.fml.common.LoadController.transition(LoadController.java:162)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:502)
at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)
at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:313)
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: net.techbrew.journeymap.JourneyMap
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:58)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:340)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:420)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:492)
... 5 more
Caused by: java.lang.RuntimeException: Attempted to load class net/techbrew/journeymap/JourneyMap for invalid side SERVER
at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:50)
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:276)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:174)
... 33 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Mac OS X (x86_64) version 10.9.4
Java Version: 1.8.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 172979016 bytes (164 MB) / 228065280 bytes (217 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 0 total;
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 v7.10.25.1205 Minecraft Forge 10.13.0.1205 17 mods loaded, 17 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
FML{7.10.25.1205} [Forge Mod Loader] (forge-1.7.10-10.13.0.1205-universal.jar) Unloaded->Constructed
Forge{10.13.0.1205} [Minecraft Forge] (forge-1.7.10-10.13.0.1205-universal.jar) Unloaded->Constructed
Aroma1997Core{1.0.2.7} [Aroma1997Core] (Aroma1997Core-1.7.10-1.0.2.7.jar) Unloaded->Constructed
Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar) Unloaded->Constructed
Aroma1997CoreHelper{1.0.2.7} [Aroma1997Core|Helper] (Aroma1997Core-1.7.10-1.0.2.7.jar) Unloaded->Constructed
iChunUtil{4.0.0} [iChunUtil] (iChunUtil-4.0.0.jar) Unloaded->Constructed
BackTools{4.0.0} [BackTools] (BackTools-4.0.0.jar) Unloaded->Constructed
BiblioCraft{1.7.5} [BiblioCraft] (BiblioCraft[v1.7.5][MC1.7.10]-2 11.44.10 AM.jar) Unloaded->Constructed
CharacterOnGui{1.0} [CharacterOnGui] (CharacterOnGui-1.7.10-1.3.jar) Unloaded->Constructed
ftfloocraft{1.7.2-0.1} [Floocraft] (Floocraft-1.7.10-0.1.jar) Unloaded->Constructed
GalacticraftCore{3.0.0} [Galacticraft Core] (GalacticraftCore-BETA-1.7-3.0.0.149 11.44.10 AM.jar) Unloaded->Constructed
GalacticraftMars{3.0.0} [Galacticraft Planets] (Galacticraft-Planets-BETA-1.7-3.0.0.149 11.44.10 AM.jar) Unloaded->Constructed
Hats{4.0.0} [Hats] (Hats-4.0.0.jar) Unloaded->Constructed
journeymap{4.0.4} [JourneyMap] (JourneyMap4.0.4_FairPlay_MC1.7.10.jar) Unloaded->Errored
mcheli{0.9.3} [MC Helicopter] (mcheli) Unloaded->Constructed
cfm{3.3.2} [§6MrCrayfish's Furniture Mod] (MrCrayfishFurnitureModv3.3.2(1.7.2).jar) Unloaded->Constructed
Profiler Position: N/A (disabled)
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)

i know there is a mod but i want to know which one is causing the problem

Thanks Im kinda new to owning a server and the other guy was making it tricky but thanks for clearing it up and btw I'm made a new bukkit server and i need testers reply if interested