Hello i the can't resolve the crash my selfe can you delte the old aw vertion to corect the crash . The rapport if needed :
Duplicate Mods:
ancientwarfare : /aternos/server/./mods/ancientwarfare-1.12.2-2.6.0.239.jar
ancientwarfare : /aternos/server/./mods/ancientwarfare-1.12.2-2.5.221.jar
ancientwarfareautomation : /aternos/server/./mods/ancientwarfare-1.12.2-2.6.0.239.jar
ancientwarfareautomation : /aternos/server/./mods/ancientwarfare-1.12.2-2.5.221.jar
ancientwarfarenpc : /aternos/server/./mods/ancientwarfare-1.12.2-2.6.0.239.jar
ancientwarfarenpc : /aternos/server/./mods/ancientwarfare-1.12.2-2.5.221.jar
ancientwarfarestructure : /aternos/server/./mods/ancientwarfare-1.12.2-2.6.0.239.jar
ancientwarfarestructure : /aternos/server/./mods/ancientwarfare-1.12.2-2.5.221.jar
ancientwarfarevehicle : /aternos/server/./mods/ancientwarfare-1.12.2-2.6.0.239.jar
ancientwarfarevehicle : /aternos/server/./mods/ancientwarfare-1.12.2-2.5.221.jar
codechickenlib : /aternos/server/./mods/CodeChicken Lib 1.12.2-3.1.9.342-universal.jar
codechickenlib : /aternos/server/./mods/CodeChicken Lib 1.12.2-3.1.8.341-universal.jar
at net.minecraftforge.fml.common.Loader.identifyDuplicates(Loader.java:464) ~[Loader.class:?]
at net.minecraftforge.fml.common.Loader.identifyMods(Loader.java:426) ~[Loader.class:?]
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:566) ~[Loader.class:?]
at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:97) ~[FMLServerHandler.class:?]
at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:332) ~[FMLCommonHandler.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125) ~[nz.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
[17:54:26] [Server thread/ERROR] [net.minecraft.server.MinecraftServer]: This crash report has been saved to: /aternos/server/./crash-reports/crash-2018-06-09_17.54.26-server.txt
[17:54:26] [Server thread/INFO] [net.minecraft.server.MinecraftServer]: Stopping server
[17:54:26] [Server thread/INFO] [net.minecraft.server.MinecraftServer]: Saving worlds
[17:54:26] [Server thread/INFO] [FML]: The state engine was in incorrect state CONSTRUCTING and forced into state SERVER_STOPPED. Errors may have been discarded.
[17:54:26] [Server Shutdown Thread/INFO] [net.minecraft.server.MinecraftServer]: Stopping server
[17:54:26] [Server Shutdown Thread/INFO] [net.minecraft.server.MinecraftServer]: Saving worlds