Problème serveur Minecraft

Bonjour, Je viens de créer un serveur minecraft mais quanq je lance start server ça me met:
Failed to start the server!
java.net.bindexception: adress already in use: bind
at sun.nio.ch.net.bind(native method)
at sun.nio.ch.serversocketchanellmpl.bind(unknown source)
at sun.nio.ch.serversocketadaptator.bind(unknown source)
at sun.nio.ch.serversocketadaptator.bind(unknown source)
at com.mojang.a.b.(init)(unknown source)
at com.mojang.minecraft.server.minecraftserver.(init)(unknown source)
at com.mojang.minecraft.server.minecraftserver.main(unknown source)

SVP aidez moi sa fait 3 jours que je cherche sa serait sympa. Merci