# Unable to start Elastic search when i delete jar from lang-mustache and place it in lib **URL:** \ **Category:** Elasticsearch\ **Created:** [November 20, 2020, 8:45am UTC](https://discuss.elastic.co/t/unable-to-start-elastic-search-when-i-delete-jar-from-lang-mustache-and-place-it-in-lib/256090 "2020-11-20T08:45:45Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![rakeshdkaatkar](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@rakeshdkaatkar](https://discuss.elastic.co/u/rakeshdkaatkar)\ **Post date:** [November 20, 2020, 8:45am UTC](https://discuss.elastic.co/t/unable-to-start-elastic-search-when-i-delete-jar-from-lang-mustache-and-place-it-in-lib/256090/1 "2020-11-20T08:45:45Z")
``` Im getting below error java.lang.IllegalStateException: Plugin [lang-mustache] must reference a class loader local Plugin class [org.elasticsearch.script.mustache.MustachePlugin] (class loader [sun.misc.Launcher$AppClassLoader@55f96302]) at org.elasticsearch.plugins.PluginsService.loadBundle(PluginsService.java:640) at org.elasticsearch.plugins.PluginsService.loadBundles(PluginsService.java:473) at org.elasticsearch.plugins.PluginsService.(PluginsService.java:165) at org.elasticsearch.node.Node.(Node.java:328) at org.elasticsearch.node.Node.(Node.java:277) at org.elasticsearch.bootstrap.Bootstrap$5.(Bootstrap.java:227) at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:227) at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:393) at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170) at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127) at org.elasticsearch.cli.Command.main(Command.java:90) at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) For complete error details, refer to the log at E:\Elastic\elasticsearch-7.9.0-windows-x86_64\elasticsearch-7.9.0\logs\elasticsearch.log ``` ---
**Author:** ![Wolfram\_Haussig](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wolfram_haussig/32/70528_2.png) [@Wolfram\_Haussig](https://discuss.elastic.co/u/Wolfram_Haussig)\ **Post date:** [November 20, 2020, 8:50am UTC](https://discuss.elastic.co/t/unable-to-start-elastic-search-when-i-delete-jar-from-lang-mustache-and-place-it-in-lib/256090/2 "2020-11-20T08:50:47Z")
Hello Rakesh, The error message is clear: `Plugin [lang-mustache] must reference a class loader local Plugin class`. The library you moved is expected to be in the module directory. Why would you want to move the library from the module to the lib directory? Best regards Wolfram ---
**Author:** ![rakeshdkaatkar](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@rakeshdkaatkar](https://discuss.elastic.co/u/rakeshdkaatkar)\ **Post date:** [November 20, 2020, 9:03am UTC](https://discuss.elastic.co/t/unable-to-start-elastic-search-when-i-delete-jar-from-lang-mustache-and-place-it-in-lib/256090/3 "2020-11-20T09:03:34Z")
I'm using custom plugin to parse mustache template so if i dont move jar to lib my elastic crashes This is happening after i migrated from 7.0.0 to 7.9.0 same is working in 7.0.0 ---
**Author:** ![rakeshdkaatkar](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@rakeshdkaatkar](https://discuss.elastic.co/u/rakeshdkaatkar)\ **Post date:** [November 20, 2020, 9:06am UTC](https://discuss.elastic.co/t/unable-to-start-elastic-search-when-i-delete-jar-from-lang-mustache-and-place-it-in-lib/256090/4 "2020-11-20T09:06:21Z")
Also if i dont move mustache jar to lib im facing below error ```auto nel{localAddress=/0:0:0:0:0:0:0:1:9200, remoteAddress=/0:0:0:0:0:0:0:1:52832} java.lang.Exception: java.lang.NoClassDefFoundError: org/elasticsearch/script/mustache/SearchTemplateRequestBuilder at org.elasticsearch.http.netty4.Netty4HttpRequestHandler.exceptionCaught(Netty4HttpRequestHandler.java:56) [transport-netty4-client-7.9.0.jar:7.9.0] at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:302) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:381) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at org.elasticsearch.http.netty4.Netty4HttpPipeliningHandler.channelRead(Netty4HttpPipeliningHandler.java:58) [transport-netty4-client-7.9.0.jar:7.9.0] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [netty-codec-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final] ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [December 18, 2020, 9:06am UTC](https://discuss.elastic.co/t/unable-to-start-elastic-search-when-i-delete-jar-from-lang-mustache-and-place-it-in-lib/256090/5 "2020-12-18T09:06:26Z")
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