Server not workin :(

[19:22:19] [Server thread/INFO]: Starting minecraft server version 1.8
[19:22:19] [Server thread/INFO]: Loading properties
[19:22:19] [Server thread/INFO]: Default game type: SURVIVAL
[19:22:19] [Server thread/INFO]: Generating keypair
[19:22:19] [Server thread/INFO]: Starting Minecraft server on *:42773
[19:22:20] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-7019900 (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
[19:22:20] [Server thread/ERROR]: Could not load 'plugins/LuckyBlocks_10.0.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/meesvdw/thepluginbros/luckyblocks/LuckyBlocks : Unsupported major.minor version 52.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:288) [minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.<init>(CraftServer.java:250) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.PlayerList.<init>(PlayerList.java:69) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedPlayerList.<init>(SourceFile:14) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:133) [minecraft_server.jar:git-Bukkit-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484) [minecraft_server.jar:git-Bukkit-7019900]
at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
Caused by: java.lang.UnsupportedClassVersionError: com/meesvdw/thepluginbros/luckyblocks/LuckyBlocks : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_79]
at java.lang.ClassLoader.defineClass(ClassLoader.java:800) ~[?:1.7.0_79]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.7.0_79]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) ~[?:1.7.0_79]
at java.net.URLClassLoader.access$100(URLClassLoader.java:71) ~[?:1.7.0_79]
at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[?:1.7.0_79]
at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[?:1.7.0_79]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_79]
at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[?:1.7.0_79]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[minecraft_server.jar:git-Bukkit-7019900]
at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_79]
at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_79]
at java.lang.Class.forName0(Native Method) ~[?:1.7.0_79]
at java.lang.Class.forName(Class.java:274) ~[?:1.7.0_79]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[minecraft_server.jar:git-Bukkit-7019900]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[minecraft_server.jar:git-Bukkit-7019900]
... 9 more
[19:22:20] [Server thread/INFO]: [SilkSpawners] Loading SilkSpawners v3.6.7
[19:22:20] [Server thread/INFO]: [MyHome] Loading MyHome v2.3.2
[19:22:20] [Server thread/INFO]: [mcMMO] Loading mcMMO v1.5.00-b3547
[19:22:20] [Server thread/INFO]: [mcMMO] Enabling mcMMO v1.5.00-b3547
[19:22:23] [Thread-8/WARN]: [mcMMO] The updater could not find any files for the project id 31030
[19:22:23] [Server thread/INFO]: Preparing level "world"
[19:22:23] [Server thread/INFO]: Preparing start region for level 0 (Seed: -7181737814614883621)
[19:22:24] [Server thread/INFO]: Preparing spawn area: 24%
[19:22:25] [Server thread/INFO]: Preparing start region for level 1 (Seed: -7181737814614883621)
[19:22:26] [Server thread/INFO]: Preparing spawn area: 89%
[19:22:26] [Server thread/INFO]: Preparing start region for level 2 (Seed: -7181737814614883621)
[19:22:26] [Server thread/INFO]: [SilkSpawners] Enabling SilkSpawners v3.6.7
[19:22:26] [Server thread/INFO]: [SilkSpawners] WorldGuard was not found and support is disabled
[19:22:26] [Server thread/INFO]: [SilkSpawners] Loading support for v1_8_R1
[19:22:26] [Server thread/INFO]: [SilkSpawners] AutoUpdater is enabled.
[19:22:26] [Server thread/INFO]: [SilkSpawners] Result from AutoUpdater is: NO_UPDATE
[19:22:26] [Server thread/INFO]: [SilkSpawners] BarAPI was not found and remains disabled!
[19:22:26] [Server thread/INFO]: [MyHome] Enabling MyHome v2.3.2
[19:22:27] [Server thread/INFO]: [MyHome] 0 homes loaded
[19:22:27] [Server thread/INFO]: [MyHome] Using localization: English (en)
[19:22:27] [Server thread/INFO]: [MyHome] Access Control: Using Bukkit's Permssion System (Vault is recommended!)
[19:22:27] [Server thread/INFO]: [MyHome] MyHome 2.3.2 enabled
[19:22:27] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[19:22:27] [Server thread/INFO]: Done (4.542s)! For help, type "help" or "?"
[19:22:27] [Server thread/INFO]: Starting GS4 status listener
[19:22:27] [Query Listener #1/INFO]: Query running on 0.0.0.0:52773
[19:22:36] [Server thread/INFO]: com.mojang.authlib.GameProfile@20ccd638[id=<null>,name=updog2000,properties={},legacy=false] (/37.105.164.14:52019) lost connection: Disconnected
[19:22:41] [Server thread/INFO]: com.mojang.authlib.GameProfile@7f76f740[id=<null>,name=updog2000,properties={},legacy=false] (/37.105.164.14:52021) lost connection: Disconnected
[19:23:29] [Server thread/INFO]: [Server] You are not using all slots! Your server will be stopped in 4min.