Attempting to load this on a server, get the following error. What does it mean and how can it be fixed, if it isn't something wrong with the mod?

24.04 23:27:02 [Multicraft] Server stopped
24.04 23:27:02 [Multicraft] Received stop command
24.04 23:26:58 [Multicraft] Server stopped
24.04 23:26:58 [Multicraft] Restarting crashed server in 5 seconds
24.04 23:26:58 [Multicraft] Server shut down (starting)
24.04 23:26:58 [Server] INFO at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532) ~[FMLModContainer.class:?]
24.04 23:26:58 [Server] INFO at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_60]
24.04 23:26:58 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
24.04 23:26:58 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
24.04 23:26:58 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_60]
24.04 23:26:58 [Server] INFO at au.lyrael.stacywolves.StacyWolves.preInit(StacyWolves.java:67) ~[StacyWolves.class:?]
24.04 23:26:58 [Server] INFO at au.lyrael.stacywolves.CommonProxy.preInit(CommonProxy.java:29) ~[CommonProxy.class:?]
24.04 23:26:58 [Server] INFO at au.lyrael.stacywolves.item.ItemWolfFood.(ItemWolfFood.java:30) ~[ItemWolfFood.class:?]
24.04 23:26:58 [Server] INFO java.lang.NoSuchFieldError: icons
24.04 23:26:58 [Server] FML Caught exception from stacywolves
24.04 23:26:58 [Server] FML The following problems were captured during this phase
24.04 23:26:58 [Server] INFO UCE stacywolves{1.0.1-1.7.10} Stacy's Wolves Mod
24.04 23:26:58 [Server] INFO UCH Forge{10.13.4.1614} Minecraft Forge
24.04 23:26:58 [Server] INFO UCH FML{7.10.99.99} Forge Mod Loader
24.04 23:26:58 [Server] INFO UCH mcp{9.05} Minecraft Coder Pack
24.04 23:26:58 [Server] INFO States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
24.04 23:26:58 [Server] FML Fatal errors were detected during the transition from PREINITIALIZATION to INITIALIZATION. Loading cannot continue
24.04 23:26:58 [Server] FML Itemstack injection complete
24.04 23:26:58 [Server] FML Injecting itemstacks
24.04 23:26:58 [Server] FML Holder lookups applied
24.04 23:26:58 [Server] FML Applying holder lookups
24.04 23:26:58 [Server] stacywolves.Config Loaded!
24.04 23:26:58 [Server] stacywolves.Config Loading configuration....
24.04 23:26:58 [Server] stacywolves Pre Initialization: Starting...
24.04 23:26:58 [Server] FML Configured a dormant chunk cache size of 0
24.04 23:26:58 [Server] FML Found 0 ItemStackHolder annotations
24.04 23:26:58 [Server] FML Identifying ItemStackHolder annotations
24.04 23:26:58 [Server] FML Found 342 ObjectHolder annotations
24.04 23:26:58 [Server] FML Processing ObjectHolder annotations
24.04 23:26:58 [Server] FML Attempting connection with missing mods [mcp, FML, Forge, stacywolves] at SERVER
24.04 23:26:58 [Server] FML Attempting connection with missing mods [mcp, FML, Forge, stacywolves] at CLIENT
24.04 23:26:58 [Server] FML Forge Mod Loader has identified 4 mods to load
24.04 23:26:57 [Server] FML Searching /mods for mods
24.04 23:26:57 [Server] FML Found 0 mods from the command line. Injecting into mod discoverer
24.04 23:26:57 [Server] MinecraftForge Completed early MinecraftForge initialization
24.04 23:26:57 [Server] FML Replaced 183 ore recipies
24.04 23:26:57 [Server] FML MinecraftForge v10.13.4.1614 Initialized
24.04 23:26:57 [Server] MinecraftForge Attempting early MinecraftForge initialization
24.04 23:26:57 [Server] Server thread/WARN To start the server with more ram, launch it as "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
24.04 23:26:57 [Server] Server thread/INFO Starting minecraft server version 1.7.10
24.04 23:26:55 [Server] LaunchWrapper Launching wrapped minecraft {net.minecraft.server.MinecraftServer}
24.04 23:26:55 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.common.launcher.TerminalTweaker
24.04 23:26:55 [Server] LaunchWrapper Loading tweak class name cpw.mods.fml.common.launcher.TerminalTweaker
24.04 23:26:55 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
24.04 23:26:55 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
24.04 23:26:55 [Server] FML Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
24.04 23:26:54 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
24.04 23:26:54 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
24.04 23:26:54 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
24.04 23:26:54 [Server] LaunchWrapper Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
24.04 23:26:54 [Server] LaunchWrapper Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
24.04 23:26:54 [Server] FML Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_60, running on Linux:amd64:3.10.23-xxxx-std-ipv6-64, installed at /usr/java/jre1.8.0_60
24.04 23:26:54 [Server] FML Forge Mod Loader version 7.99.40.1614 for Minecraft 1.7.10 loading
24.04 23:26:53 [Server] LaunchWrapper Calling tweak class cpw.mods.fml.common.launcher.FMLServerTweaker
24.04 23:26:53 [Server] LaunchWrapper Using primary tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker
24.04 23:26:53 [Server] LaunchWrapper Loading tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker
24.04 23:26:52 [Multicraft] Updating eula.txt file
24.04 23:26:52 [Multicraft] Loaded config for "Default Minecraft Server"
24.04 23:26:52 [Multicraft] Starting server!
24.04 23:26:52 [Multicraft] Loading server properties
24.04 23:26:52 [Multicraft] Received start command