Aisukingu Posted October 14, 2021 Posted October 14, 2021 So i am trying to run a tekkit server and i do everything exactly the same as any guide and i run the server with "launch.bat" and it gives an error saying: 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(nativemethodaccessorimpl.java:78) java.base/jdk.internal.reflect.delegatingmethodaccessorimpl.invote(delegatingmethodaccessorimpl.java:43) at java.base/java.lang.reflect.method.invoke(method.java:567) at cpw.mods.fml.relauncher.serverlaunchwrapper.run(serverlaunchwrapper.java:48) at cpw.mods.fml.relauncher.serverlaunchwrapper.main(serverlaunchwrapper.java:17) caused by: 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.minecraft.launchwrapper.launch.<init>(launch.java:33) at net.minecraft.launchwrapper.launch.main(launch.java:27) Can anyone help me? Quote
JaariAtmc Posted October 14, 2021 Posted October 14, 2021 Tekkit does not run with anything higher than java 8. This particular error points out that you are using a java version higher than 8. Quote
Aisukingu Posted October 15, 2021 Author Posted October 15, 2021 3 hours ago, Aisukingu said: how do i get java 8? Can you maybe send the link to the download Quote
JaariAtmc Posted October 16, 2021 Posted October 16, 2021 https://java.com/en/download/manual.jsp Grab 64-bit. Quote
Aisukingu Posted October 16, 2021 Author Posted October 16, 2021 I have installed that and i still get the same error when i run the server. Is it maybe because i have run a 1.17.1 vanilla minecraft server which required me to install a newer java, if so how do i uninstall a newer java version 14 minutes ago, Aisukingu said: I have installed that and i still get the same error when i run the server. Is it maybe because i have run a 1.17.1 vanilla minecraft server which required me to install a newer java, if so how do i uninstall a newer java version yes that was the problem i uninstalled the new java that i forgot i had installed and it works now, thanks for the help. Quote
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