OS Name/Version: Unraid 7.0.0
Product Name/Version: AMP Release “Phobos”
v2.6.1.6, built 21/04/2025 13:43
Problem Description:
I’ve been struggling to get the ftb academy 1.16 to run.
First I just selected Feed the Beast (new source) server type and downloaded the mod. When I tried to run it, it would say a server jar wasn’t selected. If i switched from autoselect to the forge-1.16.5-36.2.34.jar that came with the mod I would just get an error.
Then, I found other topics here where I saw that there were instructions to, after the mod files are downloaded, switch the server type to forge and pick the corresponding forge version* of the mod. This did not resolve the issue, I still end up with the same error when trying to start with server JAR on either auto select or the forge one.
*[I selected “36.2.34 (mc 1.16.5)” based on the .jar file that came with the mod download]
Below is is what the console printed out when I tried to start it up:
Console
16:01:07
2025-05-15 16:01:07,060 main WARN Advanced terminal features are not available in this environment
Exception in thread "main" java.lang.IllegalAccessError: class cpw.mods.modlauncher.SecureJarHandler (in unnamed module @0x6107227e) cannot access class sun.security.util.ManifestEntryVerifier (in module java.base) because module java.base does not export sun.security.util to unnamed module @0x6107227e
at cpw.mods.modlauncher.SecureJarHandler.lambda$static$1(SecureJarHandler.java:45)
main/INFO
16:01:07
ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.34, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]
Console
16:01:07
at cpw.mods.modlauncher.api.LamdbaExceptionUtils.uncheck(LamdbaExceptionUtils.java:95)
main/INFO
16:01:07
ModLauncher 8.1.3+8.1.3+main-8.1.x.c94d18ec starting: java version 21.0.5 by Eclipse Adoptium
Console
16:01:07
at cpw.mods.modlauncher.SecureJarHandler.<clinit>(SecureJarHandler.java:45)
at cpw.mods.modlauncher.Launcher.lambda$new$6(Launcher.java:55)
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:52)
at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:47)
at cpw.mods.modlauncher.Environment.computePropertyIfAbsent(Environment.java:62)
at cpw.mods.modlauncher.Launcher.<init>(Launcher.java:55)
at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)
at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)
at net.minecraftforge.server.ServerMain.main(ServerMain.java:57)
I have been able to get a vanilla server running no problem.