BenjTMB

Every time I try opening forge-1.12.2-14.23.5.2838-installer I get this java.net.preferIPv4Stack=true Exception in thread "main" java.lang.reflect.InvocationTargetException at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:567) at net.minecraftforge.installer.Java6Gate.main(Java6Gate.java:48) Caused by: java.lang.ExceptionInInitializerError at net.minecraftforge.installer.ClientInstall.getSponsorMessage(ClientInstall.java:401) at net.minecraftforge.installer.InstallerAction.getSponsorMessage(InstallerAction.java:60) at net.minecraftforge.installer.InstallerPanel.updateFilePath(InstallerPanel.java:334) at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:315) at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:167) at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:54) ... 5 more Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1 at net.minecraftforge.installer.MirrorData.buildMirrorList(MirrorData.java:84) at net.minecraftforge.installer.MirrorData.<init>(MirrorData.java:63) at net.minecraftforge.installer.MirrorData.<clinit>(MirrorData.java:17) ... 11 more forge-1.12.2-14.23.5.2838-installer.jar.log I am trying to put this version of forge into my rlcraft server pack folder so that I can port foward and play it with a friend but it wont let me. If you need any other information just ask

what am I supposed to do I would appreciate help to fix this.

when I tried to load up my sevtech server and tried to get into it, I could not and it said no syncable config. [19:44:51] [User Authenticator #1/INFO] [minecraft/NetHandlerLoginServer]: UUID of player _Phantom_Penguin is a8afe9b8-0a04-4a19-bc4d-4e85776b9bc1 [19:44:52] [Netty Server IO #10/INFO] [FML]: Client protocol version 2 [19:44:52] [Netty Server IO #10/INFO] [FML]: Client attempting to join with 273 mods : 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[19:44:52] [Netty Server IO #10/INFO] [journeymap]: CLIENT [19:44:52] [Netty Server IO #10/INFO] [CodeChickenLib-ConfigSync]: Skipping config sync, No mods have registered a syncable config.