问readDocuments时出现com.hcl.domino.db.model.BulkOperationException:内部错误

EN

   Server server = new Server('testappdev.com.tw', 5000,
        new File("ca.crt"),
        new File("user.crt"),
        new File("user.key"),
        "",
        "",
        Executors.newSingleThreadExecutor());
   Database client = server.useDatabase("test.nsf");

   String query = "'Contact' and FirstName = 'fname'";

   List<Document> responseDocs = client.readDocuments(query).get();

java.util.concurrent.ExecutionException: com.hcl.domino.db.model.BulkOperationException: Internal error
    at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:552)
    at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:533)
    at com.google.common.util.concurrent.FluentFuture$TrustedFuture.get(FluentFuture.java:84)
    at com.xred.DqlDemo.ReadIssue.main(ReadIssue.java:39)
Caused by: com.hcl.domino.db.model.BulkOperationException: Internal error
    at com.hcl.domino.db.model.Database.noteToDocuments(Database.java:1881)
    at com.hcl.domino.db.model.Database.access$000(Database.java:38)
    at com.hcl.domino.db.model.Database$1.apply(Database.java:2006)
    at com.hcl.domino.db.model.Database$1.apply(Database.java:2003)
    at com.google.common.util.concurrent.AbstractTransformFuture$AsyncTransformFuture.doTransform(AbstractTransformFuture.java:214)
    at com.google.common.util.concurrent.AbstractTransformFuture$AsyncTransformFuture.doTransform(AbstractTransformFuture.java:203)
    at com.google.common.util.concurrent.AbstractTransformFuture.run(AbstractTransformFuture.java:118)
    at com.google.common.util.concurrent.MoreExecutors$5$1.run(MoreExecutors.java:991)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)