java.lang.NullPointerException
        at ch.qos.logback.core.sift.SiftingAppenderBase.stop(SiftingAppenderBase.java:89)
        at ch.qos.logback.core.spi.AppenderAttachableImpl.detachAndStopAllAppenders(AppenderAttachableImpl.java:107)
        at ch.qos.logback.classic.Logger.detachAndStopAllAppenders(Logger.java:206)
        at ch.qos.logback.classic.Logger.recursiveReset(Logger.java:331)
        at ch.qos.logback.classic.LoggerContext.reset(LoggerContext.java:223)
        at ch.qos.logback.classic.LoggerContext.stop(LoggerContext.java:348)
        at com.alibaba.jvm.sandbox.core.util.LogbackUtils.destroy(LogbackUtils.java:54)
        at com.alibaba.jvm.sandbox.core.server.jetty.JettyCoreServer.destroy(JettyCoreServer.java:243)
        at com.alibaba.jvm.sandbox.core.server.ProxyCoreServer.destroy(ProxyCoreServer.java:44)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.alibaba.jvm.sandbox.agent.AgentLauncher.install(AgentLauncher.java:258)
        at com.alibaba.jvm.sandbox.agent.AgentLauncher.agentmain(AgentLauncher.java:110)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386)
        at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:411)
Exception in thread "Attach Listener" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386)
        at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:411)
Caused by: java.lang.RuntimeException: sandbox attach failed.
        at com.alibaba.jvm.sandbox.agent.AgentLauncher.install(AgentLauncher.java:271)
        at com.alibaba.jvm.sandbox.agent.AgentLauncher.agentmain(AgentLauncher.java:110)
        ... 6 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.alibaba.jvm.sandbox.agent.AgentLauncher.install(AgentLauncher.java:256)
        ... 7 more
Caused by: java.io.IOException: server bind failed.
        at com.alibaba.jvm.sandbox.core.server.jetty.JettyCoreServer.bind(JettyCoreServer.java:214)
        at com.alibaba.jvm.sandbox.core.server.ProxyCoreServer.bind(ProxyCoreServer.java:39)
        ... 12 more
Caused by: java.lang.NullPointerException
        at ch.qos.logback.core.sift.SiftingAppenderBase.stop(SiftingAppenderBase.java:89)
        at ch.qos.logback.core.spi.AppenderAttachableImpl.detachAndStopAllAppenders(AppenderAttachableImpl.java:107)
        at ch.qos.logback.classic.Logger.detachAndStopAllAppenders(Logger.java:206)
        at ch.qos.logback.classic.Logger.recursiveReset(Logger.java:331)
        at ch.qos.logback.classic.LoggerContext.reset(LoggerContext.java:223)
        at com.alibaba.jvm.sandbox.core.util.LogbackUtils.init(LogbackUtils.java:33)
        at com.alibaba.jvm.sandbox.core.server.jetty.JettyCoreServer$2.process(JettyCoreServer.java:183)
        at com.alibaba.jvm.sandbox.core.util.Initializer.initProcess(Initializer.java:91)
        at com.alibaba.jvm.sandbox.core.server.jetty.JettyCoreServer.bind(JettyCoreServer.java:180)
        ... 13 more
Agent failed to start!