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Error when launching minecraft with Eclipse

CleverL

By CleverL
in Support & Bug Reports

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CleverL Tree Puncher

CleverL

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[21:03:10] [main/INFO] [GradleStart]: Extra: []
Exception in thread "main" java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap')
    at net.minecraftforge.gradle.GradleForgeHacks.searchCoremods(GradleForgeHacks.java:87)
    at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:86)
    at GradleStart.main(GradleStart.java:26)
 

 

I've this error when i try to run my project

https://prnt.sc/1xraf4q

https://prnt.sc/1xragmx

 

Why this error appear ?

 

DaemonUmbra Reality Controller

DaemonUmbra

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What version of Minecraft are you using?

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

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