NullPoint exception when reading not existed devices using ReadOnlyTsFile

The code is:

//代码占位符
ReadOnlyTsFile tsFileReader = new ReadOnlyTsFile(new TsFileSequenceReader("file.tsfile"));
ArrayList<Path> paths = new ArrayList<>();
paths.add(new Path("system.test_cpu"));
// no filter, should select 1 2 3 4 6 7 8
queryAndPrint(paths, tsFileReader, null);
tsFileReader.close();

, and actually the correct path is "root.app.system.test_cpu". Now because I define an incorrect path (i.e., not exist in the tsfile), then I get an exception:

WARN  [2019-10-24 06:29:41,832] [main] org.apache.iotdb.tsfile.common.conf.TSFileDescriptor:87 - Failed to find config file tsfile-format.properties at classpath, use default configuration WARN  [2019-10-24 06:29:41,832] [main] org.apache.iotdb.tsfile.common.conf.TSFileDescriptor:87 - Failed to find config file tsfile-format.properties at classpath, use default configuration Exception in thread "main" java.lang.NullPointerException at org.apache.iotdb.tsfile.read.TsFileSequenceReader.readTsDeviceMetaData(TsFileSequenceReader.java:276) at org.apache.iotdb.tsfile.read.controller.MetadataQuerierByFileImpl.loadChunkMetaDatas(MetadataQuerierByFileImpl.java:110) at org.apache.iotdb.tsfile.read.query.executor.TsFileExecutor.execute(TsFileExecutor.java:57) at org.apache.iotdb.tsfile.read.ReadOnlyTsFile.query(ReadOnlyTsFile.java:48) at cn.edu.thu.accessdata.TsFileQuery.queryAndPrint(TsFileQuery.java:30) at cn.edu.thu.accessdata.TsFileQuery.main(TsFileQuery.java:21)