Shoothzj edited a comment on issue #6117: URL: https://github.com/apache/skywalking/issues/6117#issuecomment-753413295
> In that PR, he said, the NPE only related the Oracle driver tracing. I am not sure whether you are in a similar case. I upgrade both agent and server side to master version. The agent looks work well. But I can not see any data in the web console.  I open the debug log for agent, it seems agent already send the data to server. ``` DEBUG 2021-01-02 09:07:47:816 DataCarrier.DEFAULT.Consumer.0.Thread TraceSegmentServiceClient : 1636 trace segments have been sent to collector. ``` Also tried modify cofig, not work ``` # The number of sampled traces per 3 seconds # Negative or zero means off, by default agent.sample_n_per_3_secs=1000 ``` Here's agent debug log [skywalking-api.log](https://github.com/apache/skywalking/files/5759630/skywalking-api.log) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
