Forge 1.8.9 server multicraft mods and plugins

Ok so I have a multicraft server that is on forge 1.8.9
I added the spongeforge 1.8.9 mod to see if it would run plugins as well as the mods and it didn’t.
So my question is how do I get a forge server with plugins to work?

SpongeForge 1.8.9 is waaaaay old, so don’t expect to much support for it.

That being said, please provide the log file(s) for the server when you tried to run it with sponge.

22.06 14:17:20 [Server] Server thread/INFO [Sponge]: Checking for worlds that need to be migrated…
22.06 14:17:20 [Server] Server thread/INFO [Sponge]: No worlds were found in need of migration.
22.06 14:17:20 [Server] Server thread/INFO [FML]: Injecting existing block and item data into this server instance
22.06 14:17:20 [Server] Server thread/INFO [FML]: Applying holder lookups
22.06 14:17:20 [Server] Server thread/INFO [FML]: Holder lookups applied
22.06 14:17:20 [Server] Server thread/INFO [STDOUT]: [biomesoplenty.common.world.WorldChunkManagerBOP:<init>:67]: settings for world:
22.06 14:17:20 [Server] Server thread/INFO [STDOUT]: [biomesoplenty.common.world.WorldChunkManagerBOP:initialLandAndSeaLayer:99]: Setting up landmass VANILLA
22.06 14:17:20 [Server] Server thread/INFO [STDOUT]: [biomesoplenty.common.world.ChunkProviderGenerateBOP:<init>:79]: ChunkProviderGenerateBOP json:
22.06 14:17:20 [Server] Server thread/INFO [STDOUT]: [biomesoplenty.common.world.ChunkProviderGenerateBOP:<init>:86]: ChunkProviderGenerateBOP settings: {“landScheme”:“vanilla”,“tempScheme”:“medium_zones”,“rainScheme”:“medium_zones”,“biomeSize”:“medium”,“amplitude”:1.0,“generateBopOre”:true,“generateBopSoils”:true,“generateBopTrees”:true,“generateBopGrasses”:true,“generateBopFoliage”:true,“generateBopFlowers”:true,“generateBopPlants”:true,“generateBopWaterPlants”:true,“generateBopMushrooms”:true,“generateRockFormations”:true,“generatePoisonIvy”:true,“generateFlax”:true,“generateBerryBushes”:true,“generateThorns”:true,“generateQuicksand”:true,“generateLiquidPoison”:true,“generateHotSprings”:true,“generateNetherHives”:true,“generateNetherPlants”:true,“generateEndFeatures”:true}
22.06 14:17:21 [Server] Server thread/INFO [FML]: Loading dimension 0 (world) (DedicatedServer)
22.06 14:17:21 [Server] Server thread/INFO [STDOUT]: [biomesoplenty.common.world.ChunkProviderGenerateBOP:<init>:79]: ChunkProviderGenerateBOP json:
22.06 14:17:21 [Server] Server thread/INFO [STDOUT]: [biomesoplenty.common.world.ChunkProviderGenerateBOP:<init>:86]: ChunkProviderGenerateBOP settings: {“landScheme”:“vanilla”,“tempScheme”:“medium_zones”,“rainScheme”:“medium_zones”,“biomeSize”:“medium”,“amplitude”:1.0,“generateBopOre”:true,“generateBopSoils”:true,“generateBopTrees”:true,“generateBopGrasses”:true,“generateBopFoliage”:true,“generateBopFlowers”:true,“generateBopPlants”:true,“generateBopWaterPlants”:true,“generateBopMushrooms”:true,“generateRockFormations”:true,“generatePoisonIvy”:true,“generateFlax”:true,“generateBerryBushes”:true,“generateThorns”:true,“generateQuicksand”:true,“generateLiquidPoison”:true,“generateHotSprings”:true,“generateNetherHives”:true,“generateNetherPlants”:true,“generateEndFeatures”:true}
22.06 14:17:21 [Server] Server thread/INFO [FML]: Loading dimension -1 (DIM-1) (DedicatedServer)
22.06 14:17:21 [Server] Server thread/INFO [FML]: Loading dimension 1 (DIM1) (DedicatedServer)
22.06 14:17:21 [Server] Server thread/INFO Preparing start region for level 0 (world)
22.06 14:17:22 [Server] Server thread/INFO Preparing spawn area: 58%
22.06 14:17:22 [Server] Server thread/INFO Preparing start region for level -1 (DIM-1)
22.06 14:17:23 [Server] Server thread/INFO Preparing spawn area: 11%
22.06 14:17:24 [Server] Server thread/INFO Preparing spawn area: 30%
22.06 14:17:25 [Server] Server thread/INFO Preparing spawn area: 51%
22.06 14:17:26 [Server] Server thread/INFO Preparing spawn area: 72%
22.06 14:17:27 [Server] Server thread/INFO Preparing spawn area: 98%
22.06 14:17:27 [Server] Server thread/INFO Preparing start region for level 1 (DIM1)
22.06 14:17:28 [Server] Startup Done (8.160s)! For help, type “help” or “?”
22.06 14:17:28 [Server] Server thread/INFO [ProjectE]: Starting server-side EMC mapping.
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘obisidan.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘glass.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘glass.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘ender’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘iron.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘gold.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘copper.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘tin.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘silver.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘lead.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘nickel.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘aluminum.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘ardite.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘cobalt.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘platinum.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘obsidian.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘electrum.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘invar.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘signalum.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘lumium.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘enderium.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘mithril.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘bronze.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘aluminumbrass.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘manyullyn.molten’
22.06 14:17:28 [Server] Server thread/WARN [ProjectE]: Can not get Fluid ‘alumite.molten’
22.06 14:17:28 [Multicraft] Skipped 69 lines due to rate limit (30/s)
22.06 14:17:28 [Server] Server thread/INFO [ProjectE]: Registered 1413 EMC values. (took 351 ms)
22.06 14:17:28 [Server] Server thread/INFO [Sponge]: Timings Reset
22.06 14:18:08 [Server] User Authenticator #1/INFO UUID of player bluedog26 is 07e5662a-9847-47ab-b8c7-e2f76f2557d3
22.06 14:18:08 [Server] Netty Epoll Server IO #2/INFO [FML]: Client protocol version 2
22.06 14:18:08 [Server] Netty Epoll Server IO #2/INFO [FML]: Client attempting to join with 21 mods : [email protected],[email protected],[email protected],BuildCraft|[email protected],BuildCraft|[email protected],[email protected],[email protected],[email protected],[email protected],BuildCraft|[email protected],[email protected],BuildCraft|[email protected],[email protected],[email protected],BuildCraft|[email protected],[email protected],[email protected],[email protected],BuildCraft|[email protected],BuildCraft|[email protected],[email protected]
22.06 14:18:08 [Server] Netty Epoll Server IO #2/INFO [FML]: Attempting connection with missing mods [sponge] at CLIENT
22.06 14:18:09 [Server] Server thread/INFO [FML]: [Server thread] Server side modded connection established
22.06 14:18:09 [Server] Server thread/INFO bluedog26[/88.144.117.132:10869] logged in with entity id 288 in world(0) at (174.68322418347864, 84.0, 46.722268024203615)
22.06 14:18:09 [Server] Server thread/INFO [ProjectE]: Sent EMC data packets to: bluedog26
22.06 14:18:09 [Server] Server thread/INFO bluedog26 joined the game
22.06 14:18:11 [Server] Server thread/FATAL Error executing task
22.06 14:18:11 [Server] INFO java.util.concurrent.ExecutionException: com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalArgumentException: Invalid locale format: en_us
22.06 14:18:11 [Server] INFO at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_212]
22.06 14:18:11 [Server] INFO at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_212]
22.06 14:18:11 [Server] INFO at net.minecraft.util.Util.func_181617_a(SourceFile:45) [g.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:660) [MinecraftServer.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:344) [ko.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605) [MinecraftServer.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481) [MinecraftServer.class:?]
22.06 14:18:11 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
22.06 14:18:11 [Server] INFO Caused by: com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalArgumentException: Invalid locale format: en_us
22.06 14:18:11 [Server] INFO at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2201) ~[minecraft_server.1.8.9.jar:?]
22.06 14:18:11 [Server] INFO at com.google.common.cache.LocalCache.get(LocalCache.java:3934) ~[minecraft_server.1.8.9.jar:?]
22.06 14:18:11 [Server] INFO at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938) ~[minecraft_server.1.8.9.jar:?]
22.06 14:18:11 [Server] INFO at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821) ~[minecraft_server.1.8.9.jar:?]
22.06 14:18:11 [Server] INFO at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827) ~[minecraft_server.1.8.9.jar:?]
22.06 14:18:11 [Server] INFO at net.minecraft.entity.player.EntityPlayerMP.handler$processClientSettingsEvent$0(EntityPlayerMP.java:358) ~[lf.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.entity.player.EntityPlayerMP.func_147100_a(EntityPlayerMP.java) ~[lf.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.network.NetHandlerPlayServer.func_147352_a(NetHandlerPlayServer.java:1167) ~[lm.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.network.play.client.C15PacketClientSettings.func_148833_a(SourceFile:52) ~[ih.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.network.play.client.C15PacketClientSettings.func_148833_a(SourceFile:9) ~[ih.class:?]
22.06 14:18:11 [Server] INFO at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:121) ~[PacketUtil.class:1.8.9-1890-4.2.0-BETA-1762]
22.06 14:18:11 [Server] INFO at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$0(SourceFile:39) ~[fh$1.class:?]
22.06 14:18:11 [Server] INFO at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fh$1.class:?]
22.06 14:18:11 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_212]
22.06 14:18:11 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_212]
22.06 14:18:11 [Server] INFO at net.minecraft.util.Util.func_181617_a(SourceFile:44) ~[g.class:?]
22.06 14:18:11 [Server] INFO … 5 more
22.06 14:18:11 [Server] INFO Caused by: java.lang.IllegalArgumentException: Invalid locale format: en_us
22.06 14:18:11 [Server] INFO at org.apache.commons.lang3.LocaleUtils.toLocale(LocaleUtils.java:142) ~[minecraft_server.1.8.9.jar:?]
22.06 14:18:23 [Multicraft] Skipped 22 lines due to rate limit (30/s)
22.06 14:18:23 [Server] Server thread/INFO [bluedog26: Set own game mode to Creative Mode]
22.06 14:18:35 [Connect] User bluedog26, IP unknown
22.06 14:18:35 [Multicraft] bluedog26 ran command Message of the Day
22.06 14:21:31 [Server] Server thread/INFO [@: Block placed]
22.06 14:22:03 [Multicraft] Received stop command
22.06 14:22:03 [Multicraft] Stopping server!
22.06 14:22:03 [Server] Server thread/INFO Saving…
22.06 14:22:03 [Server] Server thread/INFO Stopping the server
22.06 14:22:03 [Server] Server thread/INFO [Server] World saved.
22.06 14:22:03 [Server] Server thread/INFO Stopping server
22.06 14:22:03 [Server] Server thread/INFO Saving players
22.06 14:22:03 [Server] Server thread/INFO Saving worlds
22.06 14:22:03 [Server] Server thread/INFO Saving chunks for level ‘world’/Overworld
22.06 14:22:03 [Server] Server thread/INFO Saving chunks for level ‘DIM-1’/Nether
22.06 14:22:03 [Server] Server thread/INFO Saving chunks for level ‘DIM1’/The End
22.06 14:22:03 [Server] Server thread/INFO [BuildCraft]: World Unload event
22.06 14:22:03 [Server] Server thread/INFO [BuildCraft]: World Unload event
22.06 14:22:03 [Server] Server thread/INFO [BuildCraft]: World Unload event
22.06 14:22:03 [Server] Server thread/INFO [FML]: Unloading dimension 0 (world)
22.06 14:22:03 [Server] Server thread/INFO [FML]: Unloading dimension -1 (DIM-1)
22.06 14:22:03 [Server] Server thread/INFO [FML]: Unloading dimension 1 (DIM1)
22.06 14:22:03 [Server] Server thread/INFO [FML]: Applying holder lookups
22.06 14:22:03 [Server] Server thread/INFO [FML]: Holder lookups applied
22.06 14:22:03 [Server] Server thread/INFO [ProjectE]: Completed server-stop actions.
22.06 14:22:04 [Multicraft] Server shut down (stopping)
22.06 14:22:04 [Multicraft] Server stopped

22.06 14:17:20 [Server] Server thread/INFO [Sponge]: 
Checking for worlds that need to be migrated…

Well sponge loaded there.
What exactly is the issue? Sponge forge and Minecraft forge mods normally work fine together.

Also, in the future please upload the entire log to a service like pastebin or gist. You did not posted the entire log.

I don’t know how or where to add plugins so that it works on the server with the mods I have.

All plugins go in the mods folder too.

It helps to read the documentation!
https://docs.spongepowered.org/4.1.0/en/server/management/plugins.html