I'm encountering an issue where monitoring stops working. Seeing this javamelody exception:

WARNING net.bull.javamelody.JavaLogger#warn: exception while collecting data: java.lang.IllegalArgumentException
java.lang.IllegalArgumentException
at java.nio.Buffer.position(Buffer.java:244)
at net.bull.javamelody.RrdNioBackend.read(RrdNioBackend.java:147)
at org.jrobin.core.RrdBackend.readInt(RrdBackend.java:224)
at org.jrobin.core.RrdPrimitive.readInt(RrdPrimitive.java:63)
at org.jrobin.core.RrdInt.get(RrdInt.java:55)
at org.jrobin.core.Archive.<init>(Archive.java:69)
at org.jrobin.core.RrdDb.<init>(RrdDb.java:244)
at org.jrobin.core.RrdDb.<init>(RrdDb.java:203)
at org.jrobin.core.RrdDb.<init>(RrdDb.java:266)
at org.jrobin.core.RrdDbPool.requestRrdDb(RrdDbPool.java:103)
at net.bull.javamelody.JRobin.addValue(JRobin.java:334)
at net.bull.javamelody.Collector.collectJRobinValues(Collector.java:491)
at net.bull.javamelody.Collector.collectJavaInformations(Collector.java:382)
at net.bull.javamelody.Collector.collect(Collector.java:320)
at net.bull.javamelody.Collector.collectWithoutErrors(Collector.java:306)
at net.bull.javamelody.Collector.collectLocalContextWithoutErrors(Collector.java:295)
at net.bull.javamelody.FilterContext$CollectTimerTask.run(FilterContext.java:56)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)