# recorder not running - java error

**URL:** <https://community.gatling.io/t/recorder-not-running-java-error/6406>\
**Category:** Gatling (Open-Source)\
**Created:** [January 26, 2022, 8:37am UTC](https://community.gatling.io/t/recorder-not-running-java-error/6406 "2022-01-26T08:37:33Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Gan\_Jyi\_Yng](https://avatars.discourse-cdn.com/v4/letter/g/d6d6ee/32.png) [@Gan\_Jyi\_Yng](https://community.gatling.io/u/Gan_Jyi_Yng)\
**Post date:** [January 26, 2022, 8:37am UTC](https://community.gatling.io/t/recorder-not-running-java-error/6406/1 "2022-01-26T08:37:33Z")

</div>

I have downloaded Gatling and run it at ubuntu machine.  
however at terminal, error displayed after clicked ‘Start’.

$ ./recorder.sh  
GATLING\_HOME is set to /home/local/tester/Downloads/gatling-charts-highcharts-bundle-3.7.4  
Exception in thread “AWT-EventQueue-0” java.security.PrivilegedActionException: java.security.PrivilegedActionException: java.net.BindException: Address already in use  
at java.base/java.security.AccessController.doPrivileged(Native Method)  
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)  
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)  
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)  
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)  
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)  
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)  
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)  
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)  
Caused by: java.security.PrivilegedActionException: java.net.BindException: Address already in use  
at java.base/java.security.AccessController.doPrivileged(Native Method)  
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)  
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)  
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)  
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)  
… 9 more  
Caused by: java.net.BindException: Address already in use  
at java.base/sun.nio.ch.Net.bind0(Native Method)  
at java.base/sun.nio.ch.Net.bind(Net.java:455)  
at java.base/sun.nio.ch.Net.bind(Net.java:447)  
at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:227)  
at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134)  
at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:562)  
at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1334)  
at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:506)  
at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:491)  
at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:973)  
at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:260)  
at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:356)  
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)  
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469)  
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503)  
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)  
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)  
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)  
at java.base/java.lang.Thread.run(Thread.java:829)

 ![Screenshot from 2022-01-26 16-32-35.png](https://europe1.discourse-cdn.com/flex013/uploads/gatling2/original/1X/ab93c8d0f5fc4d7a312a31827de4ba7fb17c3509.png)

---

<div class="post-metadata">

**Author:** ![Gan\_Jyi\_Yng](https://avatars.discourse-cdn.com/v4/letter/g/d6d6ee/32.png) [@Gan\_Jyi\_Yng](https://community.gatling.io/u/Gan_Jyi_Yng)\
**Post date:** [January 26, 2022, 8:42am UTC](https://community.gatling.io/t/recorder-not-running-java-error/6406/2 "2022-01-26T08:42:47Z")

</div>

I changed to port 8001 and it works. any reason?

---

<div class="post-metadata">

**Author:** ![slandelle](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/slandelle/32/4_2.png) [@slandelle](https://community.gatling.io/u/slandelle)\
**Post date:** [January 26, 2022, 8:47am UTC](https://community.gatling.io/t/recorder-not-running-java-error/6406/3 "2022-01-26T08:47:06Z")

</div>

It’s pretty explicit: “Address already in use”  
You already have another process binded on port 8000.

sudo ss -tulpn | grep LISTEN