Unable to launch forge-xx-universal.jar, log+cmd error+java versions included

[GojiraCZ]

Hello guys,

I'm trying to run a Minecraft Forge server, but I can't launch the file forge-1.12.2-14.23.4.2705-universal.jar. It doesn't even show anything. 

I found something in a log and down below there is an error from launching via cmd

 

log

[17:42:03] [Server thread/INFO]: Starting minecraft server version 1.12.2
[17:42:03] [Server console handler/ERROR]: Exception handling console input
java.io.IOException: Neplatný popisovač
	at java.io.FileInputStream.readBytes(Native Method) ~[?:?]
	at java.io.FileInputStream.read(Unknown Source) ~[?:?]
	at java.io.BufferedInputStream.read1(Unknown Source) ~[?:?]
	at java.io.BufferedInputStream.read(Unknown Source) ~[?:?]
	at sun.nio.cs.StreamDecoder.readBytes(Unknown Source) ~[?:?]
	at sun.nio.cs.StreamDecoder.implRead(Unknown Source) ~[?:?]
	at sun.nio.cs.StreamDecoder.read(Unknown Source) ~[?:?]
	at java.io.InputStreamReader.read(Unknown Source) ~[?:?]
	at java.io.BufferedReader.fill(Unknown Source) ~[?:?]
	at java.io.BufferedReader.readLine(Unknown Source) ~[?:?]
	at java.io.BufferedReader.readLine(Unknown Source) ~[?:?]
	at nz$2.run(SourceFile:100) [minecraft_server.1.12.2.jar:?]
[17:42:03] [Server thread/INFO]: Loading properties
[17:42:04] [Server thread/INFO]: Default game type: SURVIVAL
[17:42:04] [Server thread/INFO]: Generating keypair
[17:42:04] [Server thread/INFO]: Starting Minecraft server on *:25565
[17:42:04] [Server thread/INFO]: Using default channel type
[17:42:04] [Server thread/INFO]: Preparing level "world"
[17:42:05] [Server thread/INFO]: Loaded 488 advancements
[17:42:06] [Server thread/INFO]: Preparing start region for level 0
[17:42:07] [Server thread/INFO]: Preparing spawn area: 5%
[17:42:08] [Server thread/INFO]: Preparing spawn area: 11%
[17:42:09] [Server thread/INFO]: Preparing spawn area: 18%
[17:42:10] [Server thread/INFO]: Preparing spawn area: 25%
[17:42:11] [Server thread/INFO]: Preparing spawn area: 30%
[17:42:12] [Server thread/INFO]: Preparing spawn area: 35%
[17:42:13] [Server thread/INFO]: Preparing spawn area: 41%
[17:42:14] [Server thread/INFO]: Preparing spawn area: 49%
[17:42:15] [Server thread/INFO]: Preparing spawn area: 57%
[17:42:16] [Server thread/INFO]: Preparing spawn area: 64%
[17:42:17] [Server thread/INFO]: Preparing spawn area: 72%
[17:42:18] [Server thread/INFO]: Preparing spawn area: 79%
[17:42:19] [Server thread/INFO]: Preparing spawn area: 86%
[17:42:20] [Server thread/INFO]: Preparing spawn area: 93%
[17:42:21] [Server thread/INFO]: Done (17,013s)! For help, type "help" or "?"
[17:42:24] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2602ms behind, skipping 52 tick(s)
[17:42:43] [Server thread/INFO]: Stopping the server
[17:42:43] [Server thread/INFO]: Stopping server
[17:42:43] [Server thread/INFO]: Saving players
[17:42:43] [Server thread/INFO]: Saving worlds
[17:42:43] [Server thread/INFO]: Saving chunks for level 'world'/overworld
[17:42:44] [Server thread/INFO]: Saving chunks for level 'world'/the_nether
[17:42:44] [Server thread/INFO]: Saving chunks for level 'world'/the_end
[17:42:45] [Server Shutdown Thread/INFO]: Stopping server

 

cmd

c:\Minecraft Server>java -jar forge-1.12.2-14.23.4.2705-universal.jar
A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.base/java.lang.reflect.Method.invoke(Unknown Source)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:62)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:31)
Caused by: java.lang.ClassCastException: java.base/jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to java.base/java.net.URLClassLoader
        at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34)
        at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
        ... 6 more

c:\Minecraft Server>

 

 

 

I have started Minecraft with forge profile. Didn't help. Not sure if it was in correct way.. 

Thanks for any help!

 

Edited May 30, 2018 by GojiraCZ

[shader301202]

I've got the same problem. Help would be appreciated.

[GojiraCZ]

Searched whole forum, found multiple similiar problems (logs).

 

Uninstalled JDK and JRE and it works like a charm!

[shader301202]

Uninstalling JDK and JRE of Java 10 helps? But I am learning Java right now... Uninstalling them won't help me very much ?

[DaemonUmbra]

Reading the EAQ helps too, you need to launch forge with Java 8, your PC will try to use the latest installed version (in this case 10) unless you specify by using the full path of the Java executable (Java.exe) of the version you want.

Edited May 30, 2018 by DaemonUmbra

[shader301202]

  On 5/30/2018 at 5:27 PM, DaemonUmbra said:

Reading the EAQ helps too, you need to launch forge with Java 8, your PC will try to use the latest installed version (in this case 10) unless you specify by using the full path of the Java executable (Java.exe) of the version you want.

Expand  

Sorry and thanks, next time I will read the EAQ. 

Where do I need to specify the full path? (Sry if it's a dumb question)

[DaemonUmbra]

In the launch command instead of just using "java"

[shader301202]

  On 5/30/2018 at 6:10 PM, DaemonUmbra said:

In the launch command instead of just using "java"

Expand  

I'll try it later. Thank you very much, sir

[DaemonUmbra]

You are very welcome

[shader301202]

C:\Program Files\Java\jre1.8.0_171\bin\java.exe -Xms1G -Xmx3G -jar forge-1.12.2-14.23.4.2705-universal.jar nogui
pause

doesn't work. How should I write it so it works?

[shader301202]

changing the path to Program_Files doesn't help:

[shader301202]

Thanks