Exception in thread "main" java.lang.NoClassDefFoundError: org / apache / logging / lo g4j / LogManager

I'm trying to start a jar file and as soon as I run it, I get this error! Can you help me?

C:\Unky\Web\BloodStrikeServer-master>mvn clean package -Dmaven.test.skip=true
'mvn' não é reconhecido como um comando interno
ou externo, um programa operável ou um arquivo em lotes.

C:\Unky\Web\BloodStrikeServer-master>java -jar target/lobbyplayer-0.0.1-SNAPSHOT
-fat.jar
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/lo
g4j/LogManager
        at com.bloodstrike.lobbyserver.Main.<clinit>(Main.java:17)
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.LogManager

        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 1 more

C:\Unky\Web\BloodStrikeServer-master>pause Pressione qualquer tecla para continuar. . .

Main file:

package com.bloodstrike.lobbyserver;


import java.io.FileOutputStream;

import io.vertx.core.logging.Logger;
import io.vertx.core.logging.LoggerFactory;

import com.bloodstrike.lobbyserver.manager.NetworkManager;

import io.vertx.core.Vertx;
import io.vertx.core.net.NetClient;
import io.vertx.core.net.NetServer;
import io.vertx.core.net.NetSocket;

public class Main {
    private static final Logger logger = LoggerFactory.getLogger(Main.class);

    public static void main(String[] args) throws Throwable {
        logger.info("===============================================================================");
        logger.info("BloodStrike Lobby Server");
        logger.info("Créditos: ExtremsX");
        logger.info("Versão: 0.1 Beta");
        logger.info("===============================================================================");

        logger.info("Carregando Configurações");
        Config.loadConfig();

        logger.info("Iniciando NetworkManager");
        NetworkManager.getInstance();

            Vertx.vertx().setTimer(1000, id -> {
                    try {
                        startClientDebug();
                        logger.info("Iniciando DUMPER");
                    } catch (Exception e) {
                        logger.error("Falha ao iniciar o DUMPER");
                    }
            });


        logger.info("Iniciando NetworkServer");
        NetworkServer.getInstance();
    }

    private static void startClientDebug() throws Exception {
        Logger log = LoggerFactory.getLogger(Main.class);
        int port = Integer.parseInt("4000");
        String host = "0.0.0.0";
        FileOutputStream fos = new FileOutputStream("./network.dump");

        NetServer server = Vertx.vertx().createNetServer();
        server.connectHandler(handler -> {
            NetClient client = Vertx.vertx().createNetClient();
            log.error("Nova conexão recebida de " + handler.remoteAddress());

            client.connect(port, host, res -> {
                if (!res.succeeded()) {
                    log.error("Erro ao se conectar ao servidor", res.cause());
                    try { fos.close(); } catch (Exception e) { }
                    return;
                }
                log.error("Erro ao se conectar ao servidor", res.cause());

                NetSocket socket = res.result();
                // Do cliente para o servidor
                handler.handler(buffer -> {
                    try { 
                        fos.write("\n\nClient -> Servidor\n".getBytes()); 
                        fos.write(buffer.getBytes());
                    } catch (Exception e) { }
                    socket.write(buffer);
                });

                // Do servidor para o cliente
                socket.handler(buffer -> {
                    try { 
                        fos.write("\n\nServidor -> Client\n".getBytes());
                        fos.write(buffer.getBytes());
                    } catch (Exception e) { }
                    handler.write(buffer);
                });
            });
        });
        server.listen(3999, res -> {
            if (!res.succeeded())
                return;
            log.info("Servidor DUMPER iniciado na porta 3999");
        });
    }
}