# APM java agent ver 1.20.0 - no such method issue **URL:** \ **Category:** APM\ **Tags:** java\ **Created:** [January 15, 2021, 2:48pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275 "2021-01-15T14:48:36Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![tmihaldinec](https://avatars.discourse-cdn.com/v4/letter/t/ccd318/32.png) [@tmihaldinec](https://discuss.elastic.co/u/tmihaldinec)\ **Post date:** [January 15, 2021, 2:48pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/1 "2021-01-15T14:48:36Z")
Hi, We have the problem with latest version of APM Java agent ver 1.20.0 which is also registered in ver 1.18 > [@Plugin registration error with apm-java-agent 1.18.1 and tomcat with multiple apps](https://discuss.elastic.co/t/plugin-registration-error-with-apm-java-agent-1-18-1-and-tomcat-with-multiple-apps/252687): > > APM Agent language and version: apm-java-agent 1.18.1 I have a problem with java apm agent and tomcat with multiple apps since version 1.18.0. New migrated plugins to indy aren't loaded correctly. It seems that the issue is related to classloader. It gives me errors like that: [main] ERROR co.elastic.apm.agent.bci.IndyBootstrap - no such method: co.elastic.apm.agent.springwebmvc.SpringServiceNameInstrumentation$SpringServiceNameAdvice.afterInitPropertySources(WebApplicationContext)void/invokeS… ERROR: ```auto INFO | jvm 5 | 2021/01/15 11:51:45 | 11:51:45.428 [AD Agent init] ERROR co.elastic.apm.agent.bci.IndyBootstrap - no such method: co.elastic.apm.agent.httpclient.ApacheHttpClientInstrumentation$ApacheHttpClientAdvice.onBeforeExecute(HttpRoute,HttpRequestWrapper)Object/invokeStatic INFO | jvm 5 | 2021/01/15 11:51:45 | java.lang.IllegalAccessException: no such method: co.elastic.apm.agent.httpclient.ApacheHttpClientInstrumentation$ApacheHttpClientAdvice.onBeforeExecute(HttpRoute,HttpRequestWrapper)Object/invokeStatic INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName.makeAccessException(MemberName.java:867) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName$Factory.resolveOrFail(MemberName.java:1003) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MethodHandles$Lookup.resolveOrFail(MethodHandles.java:1386) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MethodHandles$Lookup.findStatic(MethodHandles.java:780) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at co.elastic.apm.agent.bci.IndyBootstrap.bootstrap(IndyBootstrap.java:329) [?:?] INFO | jvm 5 | 2021/01/15 11:51:45 | at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source) ~[?:?] INFO | jvm 5 | 2021/01/15 11:51:45 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.IndyBootstrapDispatcher.bootstrap(IndyBootstrapDispatcher.java:31) [?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.CallSite.makeSite(CallSite.java:310) [?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:307) [?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:297) [?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:96) [httpclient-4.5.12.jar:4.5.12] INFO | jvm 5 | 2021/01/15 11:51:45 | at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) [httpclient-4.5.12.jar:4.5.12] INFO | jvm 5 | 2021/01/15 11:51:45 | at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72) [httpclient-4.5.12.jar:4.5.12] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.util.httpclient.SimpleHttpClientWrapper.executeHttpOperation(SimpleHttpClientWrapper.java:282) [appagent.jar:?] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.util.httpclient.SimpleHttpClientWrapper.executeHttpOperation(SimpleHttpClientWrapper.java:197) [appagent.jar:?] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.rest.RESTRequest.sendRequestTracked(RESTRequest.java:384) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.rest.RESTRequest.sendRequest(RESTRequest.java:337) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.rest.controller.request.AControllerRequest.sendRequest(AControllerRequest.java:130) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.rest.controller.request.ABinaryControllerRequest.sendRequest(ABinaryControllerRequest.java:36) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.config.xml.ConfigurationChannel.registerApplicationServer(ConfigurationChannel.java:1412) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.config.xml.ConfigurationChannel.access$100(ConfigurationChannel.java:120) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.config.xml.ConfigurationChannel$UnregisteredConfigurationState.nextTransition(ConfigurationChannel.java:764) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.config.xml.ConfigurationChannel.refreshConfiguration(ConfigurationChannel.java:534) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.config.xml.XMLConfigManager$AgentConfigurationRefreshTask.run(XMLConfigManager.java:631) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.config.xml.XMLConfigManager.initialize(XMLConfigManager.java:308) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.AgentKernel.start(AgentKernel.java:160) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.JavaAgent.initialize(JavaAgent.java:588) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.kernel.JavaAgent.initialize(JavaAgent.java:347) [appagent.jar:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at com.singularity.ee.agent.appagent.AgentEntryPoint$1.run(AgentEntryPoint.java:637) [?:Server Agent #20.6.0.30246 v20.6.0 GA compatible with 4.4.1.0 r6b0f05b34dd990b8006acb06d3820d0b2cb31f7f master] INFO | jvm 5 | 2021/01/15 11:51:45 | Caused by: java.lang.LinkageError: bad method type alias: (HttpRoute,HttpRequestWrapper)Object not visible from class co.elastic.apm.agent.httpclient.ApacheHttpClientInstrumentation$ApacheHttpClientAdvice INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName.checkForTypeAlias(MemberName.java:793) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName$Factory.resolve(MemberName.java:976) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName$Factory.resolveOrFail(MemberName.java:1000) ~[?:1.8.0_212] INFO | jvm 5 | 2021/01/15 11:51:45 | ... 33 more ``` what do we need to do on our side? ver 1.17 works fine thanks tomislav ---
**Author:** ![Sylvain\_Juge](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sylvain_juge/32/55521_2.png) [@Sylvain\_Juge](https://discuss.elastic.co/u/Sylvain_Juge)\ **Post date:** [January 15, 2021, 3:33pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/2 "2021-01-15T15:33:54Z")
Hi @tmihaldinec, We changed how plugin delegation works in version 1.18.0, which explains why it did not happen with previous versions. As you also get the `Caused by: java.lang.LinkageError: bad method type alias` in the stack trace, it's clearly the same symptom as in the linked discussion, and should be fixed in `1.20.0`. It seems that the exception is related to AppDynamics agent with the `com.singularity` package, do you also get the exception when AD agent is removed ? ---
**Author:** ![tmihaldinec](https://avatars.discourse-cdn.com/v4/letter/t/ccd318/32.png) [@tmihaldinec](https://discuss.elastic.co/u/tmihaldinec)\ **Post date:** [January 15, 2021, 3:42pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/3 "2021-01-15T15:42:20Z")
Hi, yes INFO | jvm 5 | 2021/01/15 11:51:45 | Caused by: java.lang.LinkageError: bad method type alias: (HttpRoute,HttpRequestWrapper)Object not visible from class co.elastic.apm.agent.httpclient.ApacheHttpClientInstrumentation$ApacheHttpClientAdvice INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName.checkForTypeAlias(MemberName.java:793) ~[?:1.8.0\_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName$Factory.resolve(MemberName.java:976) ~[?:1.8.0\_212] INFO | jvm 5 | 2021/01/15 11:51:45 | at java.lang.invoke.MemberName$Factory.resolveOrFail(MemberName.java:1000) ~[?:1.8.0\_212] INFO | jvm 5 | 2021/01/15 11:51:45 | ... 33 more i was not removing AD agent and i am not even sure i can.. we are using both systems tomislav ---
**Author:** ![Sylvain\_Juge](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sylvain_juge/32/55521_2.png) [@Sylvain\_Juge](https://discuss.elastic.co/u/Sylvain_Juge)\ **Post date:** [January 15, 2021, 3:44pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/4 "2021-01-15T15:44:57Z")
Sorry, I read your message a bit fast, I've edited my response above. I will check what could be wrong here and if a similar fix could be applied. ---
**Author:** ![tmihaldinec](https://avatars.discourse-cdn.com/v4/letter/t/ccd318/32.png) [@tmihaldinec](https://discuss.elastic.co/u/tmihaldinec)\ **Post date:** [January 15, 2021, 3:46pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/5 "2021-01-15T15:46:18Z")
Many thanks @Sylvain_Juge tomislav ---
**Author:** ![Sylvain\_Juge](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sylvain_juge/32/55521_2.png) [@Sylvain\_Juge](https://discuss.elastic.co/u/Sylvain_Juge)\ **Post date:** [January 15, 2021, 3:50pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/6 "2021-01-15T15:50:29Z")
In the mean time, could you try without the AD agent to see if that makes a difference ? Running with more than one APM agent is definitely not recommended and might trigger unpredictable results due to having classes instrumented by more than one agent. Also, does the issue happens when hot re-deploying the application or also when restarting the whole JVM ? ---
**Author:** ![tmihaldinec](https://avatars.discourse-cdn.com/v4/letter/t/ccd318/32.png) [@tmihaldinec](https://discuss.elastic.co/u/tmihaldinec)\ **Post date:** [January 15, 2021, 3:52pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/7 "2021-01-15T15:52:06Z")
because of type of application we are not doing hot deployments but full deploy/restart let me try and will get back to you basically we are using both systems but for pretty different reasons tomislav ---
**Author:** ![tmihaldinec](https://avatars.discourse-cdn.com/v4/letter/t/ccd318/32.png) [@tmihaldinec](https://discuss.elastic.co/u/tmihaldinec)\ **Post date:** [January 15, 2021, 4:03pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/8 "2021-01-15T16:03:53Z")
I can confirm that this error doen't show with AD disabled ---
**Author:** ![felixbarny](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/felixbarny/32/27341_2.png) [@felixbarny](https://discuss.elastic.co/u/felixbarny)\ **Post date:** [January 15, 2021, 4:54pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/9 "2021-01-15T16:54:39Z")
As we're catching the Exception in our agent and just log it, I think there's no impact of it besides that we won't trace requests that the AppD agent does to their backend. But I don't think it's an issue and you can probably safely ignore it. Did you see any effect of this other than that the exception is being logged? [internal note] The following is just speculation but what might be going on is that AppD runs a part of their agent (`com.singularity.ee.agent.appagent.AgentEntryPoint$1.run`) in a separate class loader where the lookup of some types does not work as expected. If we could identify the class loader where `com.singularity.ee.agent.appagent.AgentEntryPoint` is loaded from, we might be able to exclude all classes loaded by that CL in our agent setup. To find out what the classloader is we could log `lookup.lookupClass().getClassLoader()` in the catch block of `co.elastic.apm.agent.bci.IndyBootstrap#bootstrap`. Maybe it's class name starts with `com.singularity.` which would make it easy to skip by adding an exclude matcher in `co.elastic.apm.agent.bci.ElasticApmAgent#getAgentBuilder`. ---
**Author:** ![tmihaldinec](https://avatars.discourse-cdn.com/v4/letter/t/ccd318/32.png) [@tmihaldinec](https://discuss.elastic.co/u/tmihaldinec)\ **Post date:** [January 15, 2021, 5:17pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/10 "2021-01-15T17:17:40Z")
Thanks for your response yes, to be honest both AD and Elastic APM are OK and working.. problem is Tanuki java wrapper which kills JVM because startup time is 3x longer now with this agent. for now as a workaround i changed startup time in tanuki to wrapper.startup.timeout=0 but it would be nice if you can try to fix this exceptions when you get time thanks tomislav ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [February 5, 2021, 1:17pm UTC](https://discuss.elastic.co/t/apm-java-agent-ver-1-20-0-no-such-method-issue/261275/11 "2021-02-05T13:17:49Z")
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