Logtash url is not working

Elastic Stack Elasticsearch
1

Error: Address already in use: bind
Exception: Java::JavaNet::BindException
Stack: sun.nio.ch.Net.bind0(Native Method)
sun.nio.ch.Net.bind(sun/nio/ch/Net.java:555)
sun.nio.ch.ServerSocketChannelImpl.netBind(sun/nio/ch/ServerSocketChannelImpl.java:337)
sun.nio.ch.ServerSocketChannelImpl.bind(sun/nio/ch/ServerSocketChannelImpl.java:294)
io.netty.channel.socket.nio.NioServerSocketChannel.doBind(io/netty/channel/socket/nio/NioServerSocketChannel.java:141)
io.netty.channel.AbstractChannel$AbstractUnsafe.bind(io/netty/channel/AbstractChannel.java:562)
io.netty.channel.DefaultChannelPipeline$HeadContext.bind(io/netty/channel/DefaultChannelPipeline.java:1334)
io.netty.channel.AbstractChannelHandlerContext.invokeBind(io/netty/channel/AbstractChannelHandlerContext.java:600)
io.netty.channel.AbstractChannelHandlerContext.bind(io/netty/channel/AbstractChannelHandlerContext.java:579)
io.netty.channel.DefaultChannelPipeline.bind(io/netty/channel/DefaultChannelPipeline.java:973)
io.netty.channel.AbstractChannel.bind(io/netty/channel/AbstractChannel.java:260)
io.netty.bootstrap.AbstractBootstrap$2.run(io/netty/bootstrap/AbstractBootstrap.java:356)
io.netty.util.concurrent.AbstractEventExecutor.runTask(io/netty/util/concurrent/AbstractEventExecutor.java:174)
io.netty.util.concurrent.AbstractEventExecutor.safeExecute(io/netty/util/concurrent/AbstractEventExecutor.java:167)
io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(io/netty/util/concurrent/SingleThreadEventExecutor.java:470)
io.netty.channel.nio.NioEventLoop.run(io/netty/channel/nio/NioEventLoop.java:569)
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(io/netty/util/concurrent/SingleThreadEventExecutor.java:997)
io.netty.util.internal.ThreadExecutorMap$2.run(io/netty/util/internal/ThreadExecutorMap.java:74)
io.netty.util.concurrent.FastThreadLocalRunnable.run(io/netty/util/concurrent/FastThreadLocalRunnable.java:30)
java.lang.Thread.run(java/lang/Thread.java:833)
[2023-08-20T15:29:29,249][INFO ][org.logstash.beats.Server][main][ac26f8fa75bc1a117d07e19ac171d273d5410123d3b303a08d04b3ae3b26c79f] Starting server on port: 5040

2

Either your port is in use or you have additional LS process.
Can you more describe your .conf configuration?

3

see the port ...