raybah opened a new issue #4294: Agent issue with Java Spring framework URL: https://github.com/apache/skywalking/issues/4294 Please answer these questions before submitting your issue. - Why do you submit this issue? - [ ] Question or discussion - Bug - [ ] Requirement - [ ] Feature or performance improvement ___ ### Question - What do you want to know? How we can resolve this issue? For example, we can try to use older version of agent, or try to use newer version of Spring framework. Please help with this or or suggest other solutions. Also I hope this issue will be fixed in next versions of Skywalking. ___ ### Bug - Which version of SkyWalking, OS and JRE? Skywalking - 6.6.0 release (http://apache-mirror.rbc.ru/pub/apache/skywalking/6.6.0/apache-skywalking-apm-es7-6.6.0.tar.gz) OS - CentOS release 6.5 (Final) JRE - "1.8.0_92" [java_info.txt](https://github.com/apache/skywalking/files/4127760/java_info.txt) Spring version - "4.0.5" Tomcat version - "7.0.35.0" - Which company or project? Company - Tango me Project - APM research methods, trying to find solution for applications performance monitoring - What happen? If possible, provide a way for reproducing the error. e.g. demo application, component version. Skywalking server and agent have been deployed on server according documentation. Configuration parameters: server - by default agent - by default except: agent.service_name=${SW_AGENT_NAME:controllerator} collector.backend_service=${SW_AGENT_COLLECTOR_BACKEND_SERVICES:172.20.2.66:11800} We want to monitor application which was deployed in Apache Tomcat server. All worked properly for a few hours, seems like after some request in app we received an error from skywalking agent, see logs attached. [agent_bug.txt](https://github.com/apache/skywalking/files/4127882/agent_bug.txt) ___ ### Requirement or improvement - Please describe about your requirements or improvement suggestions.
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