It seems my server is failing to start as it can't verify the forge version. 

It looks like the URL is duplicated, but im unsure
 

[16:34:57] [System Warning]       : Failed to get latest forge version data from http://files.minecraftforge.net/maven/net/minecraftforge/forge/maven-metadata.xml
[16:34:57] [Minecraft Error]      : ArgumentException
[16:34:57] [Minecraft Error]      : [0] (ArgumentException) : An item with the same key has already been added.
[16:34:57] [Minecraft Error]      :    at ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
   at MinecraftModule.UpdateManager.<GetForgeUpdateData>()

when i try to run the jar manually here is what I get

 

D:\AMPDatastore\Instances\ATM7v3\Minecraft>java -jar serverstarter-2.2.0.jar
[17:04:56] [ERROR] There is no config file given.

java.io.FileNotFoundException: server-setup-config.yaml (The system cannot find the file specified)
        at java.base/java.io.FileInputStream.open0(Native Method)
        at java.base/java.io.FileInputStream.open(FileInputStream.java:216)
        at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
        at atm.bloodworkxgaming.serverstarter.ServerStarter$Companion.readConfig(ServerStarter.kt:65)
        at atm.bloodworkxgaming.serverstarter.ServerStarter$Companion.access$readConfig(ServerStarter.kt:24)
        at atm.bloodworkxgaming.serverstarter.ServerStarter.<clinit>(ServerStarter.kt:41)
        at atm.bloodworkxgaming.serverstarter.ServerStarterKt.main(ServerStarter.kt:201)
[17:04:56] [ERROR] Failed to load Yaml

java.lang.RuntimeException: No config file given.
        at atm.bloodworkxgaming.serverstarter.ServerStarter$Companion.readConfig(ServerStarter.kt:68)
        at atm.bloodworkxgaming.serverstarter.ServerStarter$Companion.access$readConfig(ServerStarter.kt:24)
        at atm.bloodworkxgaming.serverstarter.ServerStarter.<clinit>(ServerStarter.kt:41)
        at atm.bloodworkxgaming.serverstarter.ServerStarterKt.main(ServerStarter.kt:201)
Caused by: java.io.FileNotFoundException: server-setup-config.yaml (The system cannot find the file specified)
        at java.base/java.io.FileInputStream.open0(Native Method)
        at java.base/java.io.FileInputStream.open(FileInputStream.java:216)
        at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
        at atm.bloodworkxgaming.serverstarter.ServerStarter$Companion.readConfig(ServerStarter.kt:65)
        ... 3 more
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class atm.bloodworkxgaming.serverstarter.ServerStarter
        at atm.bloodworkxgaming.serverstarter.ServerStarterKt.main(ServerStarter.kt:211)