Sending payload to APM server failed

[Wolfram_Haussig]

Hi,

Others have experienced a similar error(like here) and the solution was that the error is not an error and will be demoted to a debug message in later releases.

The real error seems to be this:

@Dawn_Okem

2020-10-05 02:34:03,919 [elastic-apm-server-reporter] DEBUG co.elastic.apm.agent.report.IntakeV2ReportingEventHandler - Sending payload to APM server failed
    java.io.IOException: Error writing request body to server
            at sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.checkError(HttpURLConnection.java:3597) ~[?:1.8.0_262]
            at sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.write(HttpURLConnection.java:3580) ~[?:1.8.0_262]
            at java.util.zip.DeflaterOutputStream.deflate(DeflaterOutputStream.java:253) ~[?:1.8.0_262]
            at java.util.zip.DeflaterOutputStream.finish(DeflaterOutputStream.java:226) ~[?:1.8.0_262]
            at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:238) ~[?:1.8.0_262]
            at co.elastic.apm.agent.report.AbstractIntakeApiHandler.endRequest(AbstractIntakeApiHandler.java:156) [?:?]
            at co.elastic.apm.agent.report.IntakeV2ReportingEventHandler.endRequest(IntakeV2ReportingEventHandler.java:172) [?:?]
            at co.elastic.apm.agent.report.IntakeV2ReportingEventHandler.handleEvent(IntakeV2ReportingEventHandler.java:85) [?:?]
            at co.elastic.apm.agent.report.IntakeV2ReportingEventHandler.onEvent(IntakeV2ReportingEventHandler.java:73) [?:?]
            at co.elastic.apm.agent.report.IntakeV2ReportingEventHandler.onEvent(IntakeV2ReportingEventHandler.java:44) [?:?]
            at co.elastic.apm.agent.shaded.lmax.disruptor.BatchEventProcessor.processEvents(BatchEventProcessor.java:168) [?:?]
            at co.elastic.apm.agent.shaded.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:125) [?:?]
            at java.lang.Thread.run(Thread.java:748) [?:1.8.0_262]

Did you have a look in the logs on the APM server?
Do you have a firewall in between(although you already said that the agent can connect for healthchecks)?

Best regards
Wolfram