LỖI EXPORT PLUGINS

[13:35:08 INFO]: Set PluginClassLoader as parallel capable
[13:35:08 ERROR]: Could not load 'plugins\BossDungeon.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Cannot find main class `me.bossdungeon
.main'
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.jav
a:66) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:131) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:329) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:251) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.ja
va:292) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.jav
a:198) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java
:525) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: java.lang.ClassNotFoundException: me.bossdungeon.main
        at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_201]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:101) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:86) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_201]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_201]
        at java.lang.Class.forName0(Native Method) ~[?:1.8.0_201]
        at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_201]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.jav
a:64) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 7 more
[13:35:08 ERROR]: Could not load 'plugins\Tutorial.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Cannot find main class `me.bukkit.firs
tflames'
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.jav
a:66) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:131) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:329) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:251) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.ja
va:292) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.jav
a:198) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java
:525) [Spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: java.lang.ClassNotFoundException: me.bukkit.firstflames
        at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_201]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:101) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:86) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_201]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_201]
        at java.lang.Class.forName0(Native Method) ~[?:1.8.0_201]
        at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_201]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.jav
a:64) ~[Spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 7 more

// help me =((