云函数调用“office-to-pdf”库，将word的buffer转换成PDF文件，本地调试成功，但真机调试失败，真机调试因为不能看到云函数的本地调试打印，只能看到真机调试时的打印报错如下：

message: "errCode: -401003 api parameter type error | errMsg: parameter.fileID should be string instead of undefined;", errCode: -401003, errMsg: "parameter.fileID should be string instead of undefined;", requestID: , line: 1, …}

调用云函数的js片段如下：

imageToDocx(){
        wx.showLoading({
            title: '加载中',
          })
        wx.cloud.callFunction({
          // 云函数名称
          name: 'imageToDocx',
          // 传给云函数的参数
          data: {
            downloadFileID: this.data.downloadFileID,
            //CDN当事人签字图片
            signPathLitigantURL: wx.cloud.CDN({
              type: 'filePath',
              filePath: this.data.signPathLitigant, // 临时文件的路径
            }),
            //CDN执法人员签字图片
            signPathOfficersURL: wx.cloud.CDN({
              type: 'filePath',
              filePath: this.data.signPathOfficers, // 临时文件的路径
            }),
            sealURL: this.data.sealURL
          },
        })
        .then(res => {
            console.log('云存储文件的ID是：',res)
            wx.cloud.downloadFile({
                fileID: res.result.fileID,
                success: res => {
                // 返回并存储临时文件路径
                console.log('下载PDF路径：',res.tempFilePath)
                this.setData({
                  exportTempFilePath: res.tempFilePath
                }) 
                wx.openDocument({
                    filePath: res.tempFilePath,
                    showMenu: 'true',
                    success: function (res) {
                      console.log('打开文档成功')
                      wx.hideLoading()
                    }
                  })
                },
                fail: console.error
            })
            
        })
        .catch(res=> {
          console.log('执行出错：',res)
          wx.hideLoading()
          if (this.data.previewTempFilePath=='') {
            var showModalContent = '未生成预览文书'
          } else {
            if (typeof(this.data.signPathLitigant)=='undefined' || typeof(this.data.signPathOfficers)=='undefined') {
              var showModalContent = '未生成手写签名'
            } else {
              var showModalContent = '未知错误'
            }
          }
          console.log(showModalContent)
          wx.showModal({
            title: '导出失败',
            showCancel: false,
            content: showModalContent,
            success (res) {
              
            }
          })
          })
      },

这里再把云函数的代码粘贴如下：

// 云函数入口文件
const cloud = require('wx-server-sdk')
const {
    createReport
} = require('docx-templates')
const fs = require('fs')
const path = require('path')
const dayjs = require('dayjs')
const axios = require("axios")
const toPdf = require('office-to-pdf')
cloud.init({
    env: 'cloud1-7g1pdoii23b288bf'
})


// 云函数入口函数
exports.main = async (event, context) => {
    console.log(event)
    const res = await cloud.downloadFile({
        fileID: event.downloadFileID,
    })
    const template = res.fileContent
    console.log('当前下载读取文件成功')
    //导入当事人签字图片并转码
    let signBuffer1 = await axios({
        method: 'get',
        url: event.signPathLitigantURL,
        responseType: 'arraybuffer',
      })
    const signPathLitigant64 = new Buffer.from(signBuffer1.data, 'binary').toString('base64')
    //导入执法人员签字图片并转码
    let signBuffer2 = await axios({
        method: 'get',
        url: event.signPathOfficersURL,
        responseType: 'arraybuffer',
        headers: { "Content-Type": "*" }
      })
    const signPathOfficer64 = new Buffer.from(signBuffer2.data, 'binary').toString('base64')
    //导入印章图片并转码
    let signBuffer3 = await axios({
        method: 'get',
        url: event.sealURL,
        responseType: 'arraybuffer',
        headers: { "Content-Type": "*" }
      })
    const seal64 = new Buffer.from(signBuffer3.data, 'binary').toString('base64')


    //开始编译插入
    const wordBuffer = await createReport({
        template,
        data: {
            //变量
            
        },
        additionalJsContext: {
            getMapPicture1: async () => {
                const res = signPathLitigant64;
                return {
                width: 3,
                height: 1.6875,
                data: res,
                extension: '.png',
                layout: 'Text wrapping'
                };
            },
            getMapPicture2: async () => {
                const res = signPathOfficer64;
                return {
                width: 3,
                height: 1.6875,
                data: res,
                extension: '.png'
                };
            },
            getMapPicture3: async () => {
                const res = seal64;
                return {
                width: 4,
                height: 4,
                data: res,
                extension: '.png',
                layout: 'Text wrapping'
                };
            },
        },
        cmdDelimiter: ['+', '+']   //以+作为变量分隔符
        
    })
 
    const preDir = dayjs().format("YYYYMMDD");//日期
    console.log('当前的日期是',preDir)
    const stringRandom = require('string-random')
    const randfilename = stringRandom(32)//随机文件名
     const cloudPath = `${preDir}/${randfilename}.pdf`//文件
    console.log('当前云路径是',cloudPath)
    //开始生成PDF文件
    try {
        const pdfBuffer = await toPdf(wordBuffer)
        console.log('PDF生成成功')
        //上传云存储
        return await cloud.uploadFile({
            cloudPath: cloudPath,
            fileContent: Buffer.from(pdfBuffer, 'base64')
        })


    } catch (error) {
        return error
    }
    
}

我的分析是因为云函数中间发生问题，导致没有返回云存储的PDF文件的fileID，所以这样报错，但是因为真机调试时看不到云函数执行中的打印，所以确实找不到问题在哪里，请各位大神指点，在线等，感谢！！！