Well nodefclassfound errors are usually due to old java but it looks like you have 1.8 so on a long shot do you have -jar in front of your server jar in the startup script?
That's guessing, not troubleshooting.You should read the log and check which class is missing:
- java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker => bad forge installation
- java.lang.NoClassDefFoundError: gnu/trove/map/hash/TObjectByteHashMap => bad lib installation
- cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: binnie/extrabees/apiary/TileExtraBeeAlveary => Conflict between mods
Of course files could be broken or AV block file access and that's the reason why classloader won't find class....
In this case notice: "Caused by: java.lang.RuntimeException: Attempted to load class bjf for invalid side SERVER" which means that there is client side mod in the pack or one of the mods is buggy. Did OP update or add mods?
