Being able to troubleshoot your server, is in its own way, more important than an actual fix because a fix may not always be possible, but at least you know what the problem is. Start Your Minecraft Server Get started with your own minecraft server in 5 min and start trying out these...
In this example, we can tell that a mod is missing due to part of the stack trace saying"Missing Mods: unknown : need [1.5.2,): have missing".If we go down to the next line we can see that it tells"net.minecraftforge.fml.common.MissingModsException: Mod thaumcraft (Thaumcraft) requ...