[09:04:02 ERROR]: Could not load 'plugins\test_plugin.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Cannot find main class `me.freanzy.plugin.MainClass'
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:42) ~[craftbukkit.jar:git-Bukkit-18fbb24]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit.jar:git-Bukkit-18fbb24]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-18fbb24]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:289) [craftbukkit.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.<init>(CraftServer.java:251) [craftbukkit.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerList.<init>(PlayerList.java:69) [craftbukkit.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:179) [craftbukkit.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:504) [craftbukkit.jar:git-Bukkit-18fbb24]
at java.base/java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.ClassNotFoundException: me.freanzy.plugin.MainClass
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:433) ~[?:?]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-18fbb24]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-18fbb24]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:586) ~[?:?]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519) ~[?:?]
at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
at java.base/java.lang.Class.forName(Class.java:466) ~[?:?]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-18fbb24]
... 10 more
