# APM Java Agent error java.lang.StackOverflowError TemplateInputException **URL:** \ **Category:** APM\ **Created:** [September 5, 2018, 8:00am UTC](https://discuss.elastic.co/t/apm-java-agent-error-java-lang-stackoverflowerror-templateinputexception/147329 "2018-09-05T08:00:21Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![wujiaxin159](https://avatars.discourse-cdn.com/v4/letter/w/e68b1a/32.png) [@wujiaxin159](https://discuss.elastic.co/u/wujiaxin159)\ **Post date:** [September 5, 2018, 8:00am UTC](https://discuss.elastic.co/t/apm-java-agent-error-java-lang-stackoverflowerror-templateinputexception/147329/1 "2018-09-05T08:00:21Z")
Java: 1.8 APM Server : 6.3 APM Agent : 0.6.2 ``` org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.StackOverflowError at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:982) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ........ Caused by: java.lang.StackOverflowError at java.util.concurrent.atomic.AtomicLongArray.get(AtomicLongArray.java:112) at co.elastic.apm.shaded.jctools.queues.atomic.SequencedAtomicReferenceArrayQueue.lvSequence(SequencedAtomicReferenceArrayQueue.java:52) at co.elastic.apm.shaded.jctools.queues.atomic.MpmcAtomicArrayQueue.poll(MpmcAtomicArrayQueue.java:206) at co.elastic.apm.objectpool.impl.QueueBasedObjectPool.tryCreateInstance(QueueBasedObjectPool.java:55) at co.elastic.apm.objectpool.impl.AbstractObjectPool.createInstance(AbstractObjectPool.java:39) at co.elastic.apm.impl.ElasticApmTracer.createRealSpan(ElasticApmTracer.java:203) at co.elastic.apm.impl.ElasticApmTracer.startManualSpan(ElasticApmTracer.java:185) at co.elastic.apm.impl.ElasticApmTracer.startSpan(ElasticApmTracer.java:170) at co.elastic.apm.jdbc.JdbcHelper.createJdbcSpan(JdbcHelper.java:82) at co.elastic.apm.jdbc.StatementInstrumentation.onBeforeExecute(StatementInstrumentation.java:62) ........ java.net.ConnectException: Connection refused (Connection refused) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) at java.net.Socket.(Socket.java:434) at java.net.Socket.(Socket.java:286) ............... 2018-08-27 16:59:46.383 ERROR 16343 --- [XNIO-2 task-23] 92 org.thymeleaf.TemplateEngine : [THYMELEAF][XNIO-2 task-23] Exception processing template "api/staffolive/refresh": Error resolving template "api/staffolive/refresh", template might not exist or might not be accessible by any of the configured Template Resolvers org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template "api/staffolive/refresh", template might not exist or might not be accessible by any of the configured Template Resolvers at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ................. Caused by: org.thymeleaf.exceptions.TemplateInputException: Error resolving template "api/staffolive/refresh", template might not exist or might not be accessible by any of the configured Template Resolvers at org.thymeleaf.TemplateRepository.getTemplate(TemplateRepository.java:246) at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1104) at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060) at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011) at org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335) at org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1286) at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1041) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:984) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ... 99 more ``` ---
**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:** [September 5, 2018, 8:34am UTC](https://discuss.elastic.co/t/apm-java-agent-error-java-lang-stackoverflowerror-templateinputexception/147329/2 "2018-09-05T08:34:01Z")
Hi and thanks for your error report! Could you add some more lines for `Caused by: java.lang.StackOverflowError`? Does that happen every time or just occasionally? I think this error is already resolved in the current [development snapshot](https://github.com/elastic/apm-agent-java#snapshots). Could you try that out? Cheers, Felix ---
**Author:** ![wujiaxin159](https://avatars.discourse-cdn.com/v4/letter/w/e68b1a/32.png) [@wujiaxin159](https://discuss.elastic.co/u/wujiaxin159)\ **Post date:** [September 5, 2018, 8:43am UTC](https://discuss.elastic.co/t/apm-java-agent-error-java-lang-stackoverflowerror-templateinputexception/147329/3 "2018-09-05T08:43:43Z")
` Caused by: java.lang.StackOverflowError Repeat after 200 times. at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1305) at com.mysql.jdbc.DatabaseMetaData.getUserName(DatabaseMetaData.java:6274) at co.elastic.apm.jdbc.JdbcHelper.getConnectionMetaData(JdbcHelper.java:110) at co.elastic.apm.jdbc.JdbcHelper.createJdbcSpan(JdbcHelper.java:93) at co.elastic.apm.jdbc.StatementInstrumentation.onBeforeExecute(StatementInstrumentation.java:62) ---
**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:** [September 6, 2018, 1:05pm UTC](https://discuss.elastic.co/t/apm-java-agent-error-java-lang-stackoverflowerror-templateinputexception/147329/4 "2018-09-06T13:05:00Z")
Did you try the snapshot build? I should be fixed there. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 27, 2018, 9:05am UTC](https://discuss.elastic.co/t/apm-java-agent-error-java-lang-stackoverflowerror-templateinputexception/147329/5 "2018-09-27T09:05:02Z")
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