运行DemoDependencyParser，使用神经网络依存句法模型时报错，信息如下：
Exception in thread “main” java.lang.NullPointerException
at com.hankcs.hanlp.corpus.io.ByteArrayFileStream.ensureAvailableBytes(ByteArrayFileStream.java:82)
at com.hankcs.hanlp.corpus.io.ByteArrayStream.nextDouble(ByteArrayStream.java:70)
at com.hankcs.hanlp.dependency.nnparser.Matrix.load(Matrix.java:1310)
at com.hankcs.hanlp.dependency.nnparser.NeuralNetworkParser.load(NeuralNetworkParser.java:257)
at com.hankcs.hanlp.dependency.nnparser.NeuralNetworkParser.load(NeuralNetworkParser.java:132)
at com.hankcs.hanlp.dependency.nnparser.parser_dll.(parser_dll.java:42)
at com.hankcs.hanlp.dependency.nnparser.parser_dll.(parser_dll.java:32)
at com.hankcs.hanlp.dependency.nnparser.NeuralNetworkDependencyParser.(NeuralNetworkDependencyParser.java:40)
at com.hankcs.hanlp.dependency.nnparser.NeuralNetworkDependencyParser.(NeuralNetworkDependencyParser.java:46)
at com.hankcs.hanlp.dependency.nnparser.NeuralNetworkDependencyParser.compute(NeuralNetworkDependencyParser.java:100)
at com.hankcs.hanlp.HanLP.parseDependency(HanLP.java:709)
at com.hankcs.demo.DemoDependencyParser.main(DemoDependencyParser.java:32)
我检查了NNParserModel.txt的路径，的确是在/data/model/dependency/NNParserModel.txt。
请教大家该怎么解决？ 