[18:07:08 ERROR]: Error occurred while enabling nPractice v0.2B (Is it up to date?)
java.lang.NoClassDefFoundError: com/mongodb/MongoClient
        at fr.kavioz_z.practice.util.database.PracticeDatabase.<init>(PracticeDatabase.java:17) ~[?:?]
        at fr.kavioz_z.practice.nPractice.onEnable(nPractice.java:38) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:402) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.reload(CraftServer.java:864) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.Bukkit.reload(Bukkit.java:301) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:764) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchServerCommand(CraftServer.java:750) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at net.minecraft.server.v1_7_R4.DedicatedServer.aB(DedicatedServer.java:353) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:317) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:642) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:548) [Spigot.jar:git-NoksDevSpigot-ea452ce]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [Spigot.jar:git-NoksDevSpigot-ea452ce]
Caused by: java.lang.ClassNotFoundException: com.mongodb.MongoClient
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_161]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[Spigot.jar:git-NoksDevSpigot-ea452ce]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:71) ~[Spigot.jar:git-NoksDevSpigot-ea452ce]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_161]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_161]
        ... 18 more