wu-sheng commented on issue #117: Can't see any traces in skywalking UI URL: https://github.com/apache/incubator-skywalking-ui/issues/117#issuecomment-370148362 ``` ERROR 2018-03-01 13:26:53 SkyWalkingAgent : Enhance class org.apache.cxf.transport.http.policy.NoOpPolicyInterceptorProvider error. java.lang.IllegalStateException: Cannot resolve type description for org.apache.cxf.ws.policy.AbstractPolicyInterceptorProvider ERROR 2018-03-01 13:26:57 SkyWalkingAgent : Enhance class org.apache.cxf.transport.http.policy.HTTPClientAssertionBuilder error. java.lang.IllegalStateException: Cannot resolve type description for org.apache.cxf.ws.policy.builder.jaxb.JaxbAssertionBuilder ``` I think that is a very important logs, may I ask you to submit a new issue in SkyWalking repo, and upload a simple application(we can run locally) to help me fix this. I think I will do the recheck at my desktop, and maybe ask @raphw (Byte Buddy auther) for helps. And do you find `Byte-buddy occurs exception when match type.` this warn log? (notice `logging.level=DEBUG` in config file) FYI @raphw , I build a ProtectiveShieldMatcher(https://github.com/apache/incubator-skywalking/blob/41e5160ce7c9799b51b4b4624c953a57be4f9b58/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/plugin/PluginFinder.java#L102) to avoid exception in matcher, but seem not working. * ProtectiveShieldMatcher is here: https://github.com/apache/incubator-skywalking/blob/41e5160ce7c9799b51b4b4624c953a57be4f9b58/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/plugin/match/ProtectiveShieldMatcher.java
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