FAILURE: java.lang.NullPointerException (java.lang.NullPointerException)
java.lang.NullPointerException
	at org.bson.codecs.BsonArrayCodec.encode(BsonArrayCodec.java:81)
	at org.bson.codecs.BsonArrayCodec.encode(BsonArrayCodec.java:37)
	at org.bson.codecs.EncoderContext.encodeWithChildContext(EncoderContext.java:91)
	at org.bson.codecs.BsonDocumentCodec.writeValue(BsonDocumentCodec.java:136)
	at org.bson.codecs.BsonDocumentCodec.encode(BsonDocumentCodec.java:115)
	at org.bson.codecs.BsonDocumentCodec.encode(BsonDocumentCodec.java:41)
	at com.mongodb.internal.connection.RequestMessage.addDocument(RequestMessage.java:238)
	at com.mongodb.internal.connection.RequestMessage.addDocument(RequestMessage.java:188)
	at com.mongodb.internal.connection.CommandMessage.encodeMessageBodyWithMetadata(CommandMessage.java:140)
	at com.mongodb.internal.connection.RequestMessage.encode(RequestMessage.java:138)
	at com.mongodb.internal.connection.CommandMessage.encode(CommandMessage.java:61)
	at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:248)
	at com.mongodb.internal.connection.UsageTrackingInternalConnection.sendAndReceive(UsageTrackingInternalConnection.java:99)
	at com.mongodb.internal.connection.DefaultConnectionPool$PooledConnection.sendAndReceive(DefaultConnectionPool.java:450)
	at com.mongodb.internal.connection.CommandProtocolImpl.execute(CommandProtocolImpl.java:72)
	at com.mongodb.internal.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:218)
	at com.mongodb.internal.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:269)
	at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:131)
	at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:123)
	at com.mongodb.internal.session.ServerSessionPool.endClosedSessions(ServerSessionPool.java:143)
	at com.mongodb.internal.session.ServerSessionPool.close(ServerSessionPool.java:97)
	at com.mongodb.async.client.MongoClientImpl.close(MongoClientImpl.java:115)
	at com.mongodb.async.client.TransactionsTest.cleanUp(TransactionsTest.java:306)