How can I create report with Python from mongoDB Excel format?

I am looking for an option to generate a document in excel format, with information from a MongoDB database using the panda module, but until now I do not get it, it only generates the empty document and gives an error

Code that I use:

import sys

from pymongo import MongoClient
from pprint import pprint
import pandas as pd

client = MongoClient('localhost:27017')
db=client.equipos

def highlight_cells():
    return ['background-color: red']

def multiple_dfs(df_list, sheets, file_name):
    writer = pd.ExcelWriter(file_name,engine='xlsxwriter')   
    row = 0
    for dataframe in df_list:
        if dataframe.shape[1] == 1:
            spaces = 0
            print 'yes'
            dataframe.style.apply(highlight_cells)
        else: 
            spaces = 1
            dataframe.to_excel(writer,sheet_name=sheets,startrow=row, startcol=0,index=False)   
            row = row + len(dataframe.index) + spaces + 1
    writer.save()

collection = db.pond

title = "Title Test"
data = list(collection.find( { "time" : { "$gt" :1522897200 }, "time" : { "$lt" :1522897204 } }, {"idSonometro":1, "time" :1} ))

multiple_dfs([
    pd.DataFrame({u'Document':[]}), title, 
    pd.DataFrame({u'Data':[]}),data], 'Info', 'example.xls')

The following is an error that generates: