Exception when clicking on database

[Vampire]

java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer
	at org.bson.Document.getInteger(Document.java:169)
	at org.codinjutsu.tools.mongo.model.StatInfoEntry.lambda$static$12(StatInfoEntry.java:37)
	at org.codinjutsu.tools.mongo.logic.MongoManager.adaptToDatabaseInfos(MongoManager.java:236)
	at org.codinjutsu.tools.mongo.logic.MongoManager.lambda$getDbStats$10(MongoManager.java:199)
	at org.codinjutsu.tools.mongo.logic.MongoManager.execute(MongoManager.java:254)
	at org.codinjutsu.tools.mongo.logic.MongoManager.executeTask(MongoManager.java:244)
	at org.codinjutsu.tools.mongo.logic.MongoManager.getDbStats(MongoManager.java:202)
	at org.codinjutsu.tools.mongo.view.MongoExplorerPanel.lambda$null$40(MongoExplorerPanel.java:280)
	at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:315)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.doRun(LaterInvocator.java:435)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.runNextEvent(LaterInvocator.java:419)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:403)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
	at java.awt.EventQueue.access$500(EventQueue.java:98)
	at java.awt.EventQueue$3.run(EventQueue.java:715)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:719)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:668)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:363)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)