# Es 2.1.0 keep throwing exception

**URL:** <https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551>\
**Category:** Elasticsearch\
**Created:** [December 18, 2015, 9:10am UTC](https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551 "2015-12-18T09:10:17Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![makeyang](https://avatars.discourse-cdn.com/v4/letter/m/f05b48/32.png) [@makeyang](https://discuss.elastic.co/u/makeyang)\
**Post date:** [December 18, 2015, 9:10am UTC](https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551/1 "2015-12-18T09:10:17Z")

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[DEBUG][[action.admin.cluster.node.info](http://action.admin.cluster.node.info)] [node1] failed to execute on node [yQYHZ3hxTWOwrQPq8w4rrQ]  
RemoteTransportException[[node2][node2:9305][cluster:monitor/nodes/info[n]]]; nested: NotSerializableExceptionWrapper;  
Caused by: NotSerializableExceptionWrapper[null]  
at java.util.ArrayList.sort(ArrayList.java:1456)  
at java.util.Collections.sort(Collections.java:175)  
at org.elasticsearch.action.admin.cluster.node.info.PluginsInfo.getInfos(PluginsInfo.java:55)  
at org.elasticsearch.action.admin.cluster.node.info.PluginsInfo.writeTo(PluginsInfo.java:86)  
at org.elasticsearch.action.admin.cluster.node.info.NodeInfo.writeTo(NodeInfo.java:284)  
at org.elasticsearch.transport.netty.NettyTransportChannel.sendResponse(NettyTransportChannel.java:97)  
at org.elasticsearch.transport.netty.NettyTransportChannel.sendResponse(NettyTransportChannel.java:75)  
at org.elasticsearch.action.support.nodes.TransportNodesAction$NodeTransportHandler.messageReceived(TransportNodesAction.java:211)  
at org.elasticsearch.action.support.nodes.TransportNodesAction$NodeTransportHandler.messageReceived(TransportNodesAction.java:207)  
at org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.doRun(MessageChannelHandler.java:299)  
at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)  
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)  
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)  
at java.lang.Thread.run(Thread.java:745)

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [December 18, 2015, 9:19am UTC](https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551/2 "2015-12-18T09:19:36Z")

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Are you running the same version on all your nodes and clients?

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**Author:** ![makeyang](https://avatars.discourse-cdn.com/v4/letter/m/f05b48/32.png) [@makeyang](https://discuss.elastic.co/u/makeyang)\
**Post date:** [December 18, 2015, 9:39am UTC](https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551/3 "2015-12-18T09:39:13Z")

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sure. same 2.1.0

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**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\
**Post date:** [December 18, 2015, 11:25pm UTC](https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551/4 "2015-12-18T23:25:46Z")

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Check your plugins, it seems you have a plugin with `null` or something strange as name.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:29pm UTC](https://discuss.elastic.co/t/es-2-1-0-keep-throwing-exception/37551/5 "2017-07-05T23:29:52Z")

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