graylog version:3.3.2
Graylog syslog output plugin version:3.3.0
2021-05-11T09:21:32.057+02:00 ERROR [OutputBufferProcessor] Error in output [class com.wizecore.graylog2.plugin.SyslogOutput].
java.lang.ClassCastException: Cannot cast java.lang.String to org.joda.time.DateTime
at java.lang.Class.cast(Class.java:3369) ~[?:1.8.0_275]
at org.graylog2.plugin.Message.getFieldAs(Message.java:643) ~[graylog.jar:?]
at org.graylog2.plugin.Message.getTimestamp(Message.java:349) ~[graylog.jar:?]
at com.wizecore.graylog2.plugin.CEFSender.send(CEFSender.java:120) ~[?:?]
at com.wizecore.graylog2.plugin.SyslogOutput.write(SyslogOutput.java:220) ~[?:?]
at org.graylog2.buffers.processors.OutputBufferProcessor$1.run(OutputBufferProcessor.java:191) [graylog.jar:?]
at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:181) [graylog.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_275]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_275]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_275]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_275]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
Could you please help with this?