Hi, We're having this issue there the following exception comes up exactly every 30 seconds in our logs: ``` 2020-10-18 20:00:49,297 ERROR [ForkJoinPool.commonPool-worker-1] [org.gluu.oxauth.service.CleanerTimer] (CleanerTimer.java:169) - Failed to process clean up. java.lang.NullPointerException: null at org.gluu.oxauth.fido2.persist.RegistrationPersistenceService.getExpiredRegistrationFilter(RegistrationPersistenceService.java:256) ~[oxauth-fido2-server-4.1.0.Final.jar:?] at org.gluu.oxauth.fido2.persist.RegistrationPersistenceService.cleanup(RegistrationPersistenceService.java:234) ~[oxauth-fido2-server-4.1.0.Final.jar:?] at org.gluu.oxauth.fido2.persist.RegistrationPersistenceService$Proxy$_$$_WeldClientProxy.cleanup(Unknown Source) ~[oxauth-fido2-server-4.1.0.Final.jar:?] at org.gluu.oxauth.service.CleanerTimer.processImpl(CleanerTimer.java:164) [classes/:?] at org.gluu.oxauth.service.CleanerTimer$Proxy$_$$_WeldSubclass.processImpl(Unknown Source) [classes/:?] at org.gluu.oxauth.service.CleanerTimer.process(CleanerTimer.java:115) [classes/:?] at org.gluu.oxauth.service.CleanerTimer$Proxy$_$$_WeldSubclass.process$$super(Unknown Source) [classes/:?] [...] ``` Any recommendation to solve this? Thanks