[17:38:54] [Server thread/ERROR]: Could not load 'plugins/AdminFun.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: me/trevor1134/adminfun/AdminFun : Unsupported major.minor version 52.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) -[craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) -[craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292) [craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_71]
Caused by: java.lang.UnsupportedClassVersionError: me/trevor1134/adminfun/AdminFun : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method) -[?:1.7.0_71]
at java.lang.ClassLoader.defineClass(Unknown Source) -[?:1.7.0_71]
at java.security.SecureClassLoader.defineClass(Unknown Source) -[?:1.7.0_71]
at java.net.URLClassLoader.defineClass(Unknown Source) -[?:1.7.0_71]
at java.net.URLClassLoader.access$100(Unknown Source) -[?:1.7.0_71]
at java.net.URLClassLoader$1.run(Unknown Source) -[?:1.7.0_71]
at java.net.URLClassLoader$1.run(Unknown Source) -[?:1.7.0_71]
at java.security.AccessController.doPrivileged(Native Method) -[?:1.7.0_71]
at java.net.URLClassLoader.findClass(Unknown Source) -[?:1.7.0_71]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) -[craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) -[craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at java.lang.ClassLoader.loadClass(Unknown Source) -[?:1.7.0_71]
at java.lang.ClassLoader.loadClass(Unknown Source) -[?:1.7.0_71]
at java.lang.Class.forName0(Native Method) -[?:1.7.0_71]
at java.lang.Class.forName(Unknown Source) -[?:1.7.0_71]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) -[craftbukkit.jar:git-Spigot-5f38d38-12698ea]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) -[craftbukkit.jar:git-Spigot-5f38d38-12698ea]
... 6 more