我正在使用sphinx 4进行语音识别项目。请告诉我为什么会收到此错误。我曾在每个可能的平台上进行过研究，但我的问题仍未得到解决。我已正确放置所有相关文件（语法，helloworld.xml）。此错误出现在程序中的识别器部分。请有人帮我吗？
Problem configuring HelloWorld: Property Exception component:'jsgfGrammar' property:'grammarLocation' - Can't locate resource:/demo.sphinx.helloworld.HelloWorld
Property Exception component:'jsgfGrammar' property:'grammarLocation' - Can't locate resource:/demo.sphinx.helloworld.HelloWorld
at edu.cmu.sphinx.util.props.ValidatingPropertySheet.getResource(ValidatingPropertySheet.java:372)
at edu.cmu.sphinx.jsapi.JSGFGrammar.newProperties(JSGFGrammar.java:250)
at edu.cmu.sphinx.util.props.ConfigurationManager.lookup(ConfigurationManager.java:214)
at edu.cmu.sphinx.util.props.ValidatingPropertySheet.getComponent(ValidatingPropertySheet.java:403)
at edu.cmu.sphinx.linguist.flat.FlatLinguist.newProperties(FlatLinguist.java:169)
at edu.cmu.sphinx.util.props.ConfigurationManager.lookup(ConfigurationManager.java:214)
at edu.cmu.sphinx.util.props.ValidatingPropertySheet.getComponent(ValidatingPropertySheet.java:403)
at edu.cmu.sphinx.decoder.search.SimpleBreadthFirstSearchManager.newProperties(SimpleBreadthFirstSearchManager.java:183)
at edu.cmu.sphinx.util.props.ConfigurationManager.lookup(ConfigurationManager.java:214)
at edu.cmu.sphinx.util.props.ValidatingPropertySheet.getComponent(ValidatingPropertySheet.java:403)
at edu.cmu.sphinx.decoder.Decoder.newProperties(Decoder.java:71)
at edu.cmu.sphinx.util.props.ConfigurationManager.lookup(ConfigurationManager.java:214)
at edu.cmu.sphinx.util.props.ValidatingPropertySheet.getComponent(ValidatingPropertySheet.java:403)
at edu.cmu.sphinx.recognizer.Recognizer.newProperties(Recognizer.java:93)
at edu.cmu.sphinx.util.props.ConfigurationManager.lookup(ConfigurationManager.java:214)
at HelloWorld.main(Jarvis.java:48)