harmonyOS next 读取RawFile资源文件夹下的文件一直报错

try {  getContext(this).resourceManager.getRawFileContent("MapData.json", (error: BusinessError, value: Uint8Array) => {    const textDecoder = util.TextDecoder.create("utf-8");    const res = textDecoder.decodeWithStream(value, { stream: false });    this.sections = JSON.parse(res);  });} catch (error) {  console.error(`callback getRawFileContent failed, error is ${JSON.stringify(error)}`)}
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