Bug skyfactory 3 server not working

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yudothat129

New Member
Aug 5, 2019
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0
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so i have made a skyfactory 3 server it was working the other day but all of a sudden it had stopped working and, i reinstalled java that made it work then i downloaded the 64bit offline version that made it better i think but it says this:

Starting server
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256M; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: Using the ParNew young collector with the Serial old collector is deprecated and will likely be removed in a future release
We appear to be missing one or more essential library files.
You will need to add them to your server before FML and Forge will run successfully.java.lang.ClassNotFoundException: net.minecraft.launchwrapper.Launch
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:44)
at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:31)
Exiting...
Press any key to continue . . .

can anyone help me

p.s. idk if this is the right place sorry I'm new