Monitoring stat flooding the error log

Hi any facing issue this

2020.03.17 12:08:59 org.jivesoftware.openfire.reporting.stats.StatsEngine - Error sampling for statistic server_sessions
org.jrobin.core.RrdException: Datasource server_sessions not found
at org.jrobin.core.Sample.setValue(Sample.java:89) ~[jrobin-1.5.9.jar!/:?]
at org.jivesoftware.openfire.reporting.stats.StatsEngine$SampleTask.run(StatsEngine.java:389) [monitoring-2.0.0.jar!/:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_202]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_202]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_202]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_202]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_202]

where keep flooding the error log .

I have seen before that the database that stores the RDD-databases gets corrupted. This might be causing your problem too. Have you installed the monitoring plugin? If not, try doing that, as the latest release might clean up these corrupted rows.