Jump to content

Forge 1.12.2 latest recommended version starts refusing to open out of nowhere.


Slyshi

Recommended Posts

Hi, I was making a Forge server for me and a group of friends and everything went smoothly for the past week.

I turned the server off when I went to bed, and once I woke up, I restarted the server only for it to instantly close. I have no idea what is causing this.

Spoiler

D:\server>java -Xmx4096M -Xms4096M -jar forge-1.12.2-14.23.1.2555-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

I tried everything. Reinstalling, making a new server, deleting each and every single mod I was using, and no luck. I've been trying to fix this for over 2 hours and I have no idea what is going on. As a last resort I decided to make an account here in hope that someone will help me fix the issue. Thanks

Edited by Slyshi
Link to comment
Share on other sites

1 hour ago, Slyshi said:

Caused by: java.lang.ClassCastException: java.base/jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to java.base/java.net.URLClassLoader

 

You're using Java 9, which isn't supported by Forge. You need to use Java 8 instead.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Announcements



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.