Problème lors de la création plugins

Bonjour, je n’arrive plus à crée mes plugins depuis que je les développes en 1.8, voici les logs:

[11:36:08] [Server thread/INFO]: Starting minecraft server version 1.8
[11:36:08] [Server thread/INFO]: Loading properties
[11:36:08] [Server thread/INFO]: Default game type: SURVIVAL
[11:36:09] [Server thread/INFO]: This server is running CraftBukkit version git-Spigot-b73910a-726656b (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
[11:36:09] [Server thread/INFO]: Debug logging is disabled
[11:36:09] [Server thread/INFO]: Server Ping Player Sample Count: 12
[11:36:09] [Server thread/INFO]: Using 4 threads for Netty based IO
[11:36:09] [Server thread/INFO]: Generating keypair
[11:36:09] [Server thread/INFO]: Starting Minecraft server on *:25565
[11:36:11] [Server thread/INFO]: Set PluginClassLoader as parallel capable
[11:36:11] [Server thread/ERROR]: Could not load ‘plugins\NirvanaMessagesV2.jar’ in folder ‘plugins’
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: nirvanamessages/main : Unsupported major.minor version 52.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:291) [original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:505) [original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_65]
Caused by: java.lang.UnsupportedClassVersionError: nirvanamessages/main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_65]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.7.0_65]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.7.0_65]
at java.net.URLClassLoader.defineClass(Unknown Source) ~[?:1.7.0_65]
at java.net.URLClassLoader.access$100(Unknown Source) ~[?:1.7.0_65]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_65]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_65]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_65]
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.7.0_65]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_65]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_65]
at java.lang.Class.forName0(Native Method) ~[?:1.7.0_65]
at java.lang.Class.forName(Unknown Source) ~[?:1.7.0_65]
at org.bukkit.plugin.java.PluginClassLoader.(PluginClassLoader.java:64) ~[original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[original-spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-b73910a-726656b]
… 6 more
[11:36:11] [Server thread/WARN]: **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE!
[11:36:11] [Server thread/WARN]: The server will make no attempt to authenticate usernames. Beware.
[11:36:11] [Server thread/WARN]: While this makes the game possible to play without internet access, it also opens up the ability for hackers to connect with any username they choose.
[11:36:11] [Server thread/WARN]: To change this, set “online-mode” to “true” in the server.properties file.
[11:36:11] [Server thread/INFO]: **** Beginning UUID conversion, this may take A LONG time ****
[11:36:11] [Server thread/INFO]: Preparing level “world”
[11:36:11] [Server thread/INFO]: -------- World Settings For [world] --------
[11:36:11] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true
[11:36:11] [Server thread/INFO]: Item Merge Radius: 2.5
[11:36:11] [Server thread/INFO]: Item Despawn Rate: 6000
[11:36:11] [Server thread/INFO]: View Distance: 10
[11:36:11] [Server thread/INFO]: Arrow Despawn Rate: 1200
[11:36:11] [Server thread/INFO]: Zombie Aggressive Towards Villager: true
[11:36:11] [Server thread/INFO]: Chunks to Grow per Tick: 650
[11:36:11] [Server thread/INFO]: Clear tick list: false
[11:36:11] [Server thread/INFO]: Experience Merge Radius: 3.0
[11:36:11] [Server thread/INFO]: Mob Spawn Range: 4
[11:36:11] [Server thread/INFO]: Anti X-Ray: true
[11:36:11] [Server thread/INFO]: Engine Mode: 1
[11:36:11] [Server thread/INFO]: Hidden Blocks: [14, 15, 16, 21, 48, 49, 54, 56, 73, 74, 82, 129, 130]
[11:36:11] [Server thread/INFO]: Replace Blocks: [1, 5]
[11:36:11] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64
[11:36:11] [Server thread/INFO]: Alternative Hopper Ticking: false
[11:36:11] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 8 Hopper Amount: 1
[11:36:11] [Server thread/INFO]: Random Lighting Updates: false
[11:36:11] [Server thread/INFO]: Structure Info Saving: true
[11:36:11] [Server thread/INFO]: Max TNT Explosions: 100
[11:36:11] [Server thread/INFO]: Nerfing mobs spawned from spawners: false
[11:36:11] [Server thread/INFO]: Cactus Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Cane Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Melon Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Mushroom Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Pumpkin Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Sapling Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Wheat Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Mi 16
[11:36:11] [Server thread/INFO]: Sending up to 10 chunks per packet
[11:36:11] [Server thread/INFO]: Max Entity Collisions: 8
[11:36:11] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Feature: 14357617
[11:36:11] [Server thread/INFO]: -------- World Settings For [world_nether] --------
[11:36:11] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true
[11:36:11] [Server thread/INFO]: Item Merge Radius: 2.5
[11:36:11] [Server thread/INFO]: Item Despawn Rate: 6000
[11:36:11] [Server thread/INFO]: View Distance: 10
[11:36:11] [Server thread/INFO]: Arrow Despawn Rate: 1200
[11:36:11] [Server thread/INFO]: Zombie Aggressive Towards Villager: true
[11:36:11] [Server thread/INFO]: Chunks to Grow per Tick: 650
[11:36:11] [Server thread/INFO]: Clear tick list: false
[11:36:11] [Server thread/INFO]: Experience Merge Radius: 3.0
[11:36:11] [Server thread/INFO]: Mob Spawn Range: 4
[11:36:11] [Server thread/INFO]: Anti X-Ray: true
[11:36:11] [Server thread/INFO]: Engine Mode: 1
[11:36:11] [Server thread/INFO]: Hidden Blocks: [14, 15, 16, 21, 48, 49, 54, 56, 73, 74, 82, 129, 130]
[11:36:11] [Server thread/INFO]: Replace Blocks: [1, 5]
[11:36:11] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64
[11:36:11] [Server thread/INFO]: Alternative Hopper Ticking: false
[11:36:11] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 8 Hopper Amount: 1
[11:36:11] [Server thread/INFO]: Random Lighting Updates: false
[11:36:11] [Server thread/INFO]: Structure Info Saving: true
[11:36:11] [Server thread/INFO]: Max TNT Explosions: 100
[11:36:11] [Server thread/INFO]: Nerfing mobs spawned from spawners: false
[11:36:11] [Server thread/INFO]: Cactus Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Cane Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Melon Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Mushroom Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Pumpkin Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Sapling Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Wheat Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Mi 16
[11:36:11] [Server thread/INFO]: Sending up to 10 chunks per packet
[11:36:11] [Server thread/INFO]: Max Entity Collisions: 8
[11:36:11] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Feature: 14357617
[11:36:11] [Server thread/INFO]: -------- World Settings For [world_the_end] --------
[11:36:11] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true
[11:36:11] [Server thread/INFO]: Item Merge Radius: 2.5
[11:36:11] [Server thread/INFO]: Item Despawn Rate: 6000
[11:36:11] [Server thread/INFO]: View Distance: 10
[11:36:11] [Server thread/INFO]: Arrow Despawn Rate: 1200
[11:36:11] [Server thread/INFO]: Zombie Aggressive Towards Villager: true
[11:36:11] [Server thread/INFO]: Chunks to Grow per Tick: 650
[11:36:11] [Server thread/INFO]: Clear tick list: false
[11:36:11] [Server thread/INFO]: Experience Merge Radius: 3.0
[11:36:11] [Server thread/INFO]: Mob Spawn Range: 4
[11:36:11] [Server thread/INFO]: Anti X-Ray: true
[11:36:11] [Server thread/INFO]: Engine Mode: 1
[11:36:11] [Server thread/INFO]: Hidden Blocks: [14, 15, 16, 21, 48, 49, 54, 56, 73, 74, 82, 129, 130]
[11:36:11] [Server thread/INFO]: Replace Blocks: [1, 5]
[11:36:11] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64
[11:36:11] [Server thread/INFO]: Alternative Hopper Ticking: false
[11:36:11] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 8 Hopper Amount: 1
[11:36:11] [Server thread/INFO]: Random Lighting Updates: false
[11:36:11] [Server thread/INFO]: Structure Info Saving: true
[11:36:11] [Server thread/INFO]: Max TNT Explosions: 100
[11:36:11] [Server thread/INFO]: Nerfing mobs spawned from spawners: false
[11:36:11] [Server thread/INFO]: Cactus Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Cane Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Melon Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Mushroom Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Pumpkin Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Sapling Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Wheat Growth Modifier: 100%
[11:36:11] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Mi 16
[11:36:11] [Server thread/INFO]: Sending up to 10 chunks per packet
[11:36:11] [Server thread/INFO]: Max Entity Collisions: 8
[11:36:11] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Feature: 14357617
[11:36:11] [Server thread/INFO]: Preparing start region for level 0 (Seed: 2945132780545322923)
[11:36:12] [Server thread/INFO]: Preparing spawn area: 15%
[11:36:13] [Server thread/INFO]: Preparing spawn area: 32%
[11:36:14] [Server thread/INFO]: Preparing spawn area: 52%
[11:36:15] [Server thread/INFO]: Preparing spawn area: 76%
[11:36:16] [Server thread/INFO]: Preparing start region for level 1 (Seed: 2945132780545322923)
[11:36:17] [Server thread/INFO]: Preparing spawn area: 25%
[11:36:18] [Server thread/INFO]: Preparing spawn area: 50%
[11:36:19] [Server thread/INFO]: Preparing spawn area: 80%
[11:36:20] [Server thread/INFO]: Preparing start region for level 2 (Seed: 2945132780545322923)
[11:36:21] [Server thread/INFO]: Preparing spawn area: 53%
[11:36:21] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[11:36:21] [Server thread/INFO]: Done (10,787s)! For help, type “help” or “?”

Pouvez-vous m’aider ?

Apparemment il y a un problème de version et surtout il manque des fichiers/sources.

C’est-à-dire il manque des fichiers / sources ? tu parles du fichiers main ?
[hr]
Si ca peut aider voici mon fichier main:

package nirvanamessages;

import org.bukkit.plugin.java.JavaPlugin;

public class main extends JavaPlugin{

public void OnEnable(){
	
    getLogger().info("[NirvanaMessagesV2] Enable !");
    getConfig().options().copyDefaults(true);
    saveDefaultConfig();
    saveConfig();
    reloadConfig();
}

}

Mon fichier plugin.yml:

name: NMessagesV2
main: nirvanamessages.main
version: 2.0
author: Xx_Will33_xX
commands:
web:
aliases: web
description: lien vers le site
usage: /web via le jeu
permission: Nmessage.web

permissions:
Nmessage.web:
default: true
description: /web