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java.lang.NullPointerException: 	at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:53)	at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:37)	at com.mongodb.connection.RequestMessage.getCodec(RequestMessage.java:245)	at com.mongodb.connection.RequestMessage.addDocument(RequestMessage.java:205)	at com.mongodb.connection.CommandMessage.encodeMessageBodyWithMetadata(CommandMessage.java:75)	at com.mongodb.connection.RequestMessage.encodeWithMetadata(RequestMessage.java:160)	at com.mongodb.connection.RequestMessage.encode(RequestMessage.java:147)	at com.mongodb.connection.CommandHelper.sendMessage(CommandHelper.java:88)	at com.mongodb.connection.CommandHelper.executeCommand(CommandHelper.java:32)	at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:187)	at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:135)	at java.lang.Thread.run(Thread.java:745)