ERROR Could not load 'plugins/CosmicChest (4).jar' in folder 'plugins'
25.10 16:54:57 [Server] INFO org.bukkit.plugin.InvalidPluginException: main class `ab' does not extend JavaPlugin
25.10 16:54:57 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:74) ~[patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:331) ~[patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:254) [patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at org.bukkit.craftbukkit.v1_9_R1.CraftServer.loadPlugins(CraftServer.java:291) [patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at net.minecraft.server.v1_9_R1.DedicatedServer.init(DedicatedServer.java:205) [patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:570) [patched_1.9.jar:git-Paper-612]
25.10 16:54:57 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]