Problem FTB Omnia Server - Failure to Start

[McMookerson]

After taking a break for several years, I decided to jump back into Minecraft / FTB. I downloaded the FTB Omnia server package and installed it, but have been having a hell of a time getting it to launch. I feel like I've forgotten everything I once knew on getting these servers up and running, and I am not finding any threads with this same issue when I did some initial research on Google before coming here.

Additional context:

1. First, it installed but the start.bat didn't populate with which .JAR file to launch, so I've pointed it at the forge .JAR file.
2. I've installed the server to the path C:\Games\MC Server\FTB Omnia\
3. JDK has been installed at the path E:\Programs\Java\jdk-14.0.2 - I've configured environment variables to point to it, and have validated that they're functioning properly.

When launching, I get the below error (full crash log attached)

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 8/28/20, 7:37 AM
Description: Exception in server tick loop

net.minecraftforge.fml.LoadingFailedException: Loading errors encountered: [
Improved Stations (improved-stations) encountered an error during the load_registries event phase
§7java.lang.NoSuchFieldException: modifiers
]
at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:218) ~[?:?] {re:classloading}
at net.minecraftforge.fml.ModLoader.lambda$gatherAndInitializeMods$25(ModLoader.java:206) ~[?:?] {re:classloading}
at net.minecraftforge.registries.GameData.fireRegistryEvents(GameData.java:995) ~[?:?] {re:classloading}
at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:206) ~[?:?] {re:classloading}
at net.minecraftforge.fml.server.ServerModLoader.begin(ServerModLoader.java:45) ~[?:?] {re:classloading}
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:122) ~[?:?] {re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:613) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at java.lang.Thread.run(Thread.java:832) [?:?] {}

Any insight or help would be greatly appreciated. Thanks!

 

[Darinth]

Unsure what versions of java are supported, you may want to try running a lower version I've generally been staying with the 1.8 version, which is what I've got my current omnia server on linux running on.