用于检测知识的dialogflow v2beta1始终为空答案

Question

我在这里=> https://github.com/googleapis/nodejs-dialogflow/blob/master/samples/detect.v2beta1.js#L371-L414上看到了该方法，并按照示例进行操作，但是，我的KnowledgeAnswers始终为空

这是我的detectIntentKnowLedge的课程

class Dialogflow {
  constructor(projectId) {
    this.projectId = projectId;
    this.sessionClient = new dialogflow.SessionsClient({
      keyFilename: process.env.DIALOGFLOW_CREDINTIALS
    });
  }

  async sendQueryToDetectKnowledge(
    textMessage,
    sessionId,
    knowledgeBaseFullName = 'faq'
  ) {
    const sessionPath = this.sessionClient.sessionPath(
      this.projectId,
      sessionId
    );
    const knowbase = new dialogflow.KnowledgeBasesClient({
      keyFilename: process.env.DIALOGFLOW_CREDINTIALS
    });
    const knowledgeBasePath = knowbase.knowledgeBasePath(
      this.projectId,
      knowledgeBaseFullName
    );

    const request = {
      session: sessionPath,
      queryInput: {
        text: {
          text: textMessage,
          languageCode: LANGUANGE_CODE
        }
      },
      queryParams: {
        knowledgeBaseNames: [knowledgeBasePath]
      }
    };
    try {
      const result = await this.sessionClient.detectIntent(request);
      return result;
    } catch (err) {
      throw new error(`something error to detect version 2 beta 1`);
    }
  }
}

knowledgeBaseFullName值是名称知识库吗？我的知识仅被命​​名为faq knowlegdeAnserw的响应始终为空

我错过了什么吗？