Erro BadZipFile ao salvar Dataframe pro excel.

Olá estou desenvolvendo um programa que ao decorrer vai salvando multiplos arquivos excel, mas no ultimo arquivo sempre acontece este erro

BadZipFile: File is not a zip file

Nos outros não acontece nada é sempre no ultimo, porque eu tentei apagar esse excel mas o erro continuo no penultimo, como o codígo é extenso vou colocar apenas os dois ultimos.

from selenium import webdriver
import pandas as pd
from bs4 import BeautifulSoup, NavigableString
from time import sleep
from pathlib import Path
from selenium.common.exceptions import NoSuchElementException
from openpyxl import load_workbook

ordem = int(input('Digite a tecla 1 para crescente, 2 para descrescente:'))
dadosart = int(input('Digite a ART:'))
filename = str(input('Digite o caminho a ser salvo:'))

    # 5. Observações
    tabela4 = []
    try:
        dados = driver.find_element_by_xpath('/html/body/table/tbody/tr/td/fieldset/table/tbody/tr/td/font').text
        tabela4.append(artl), tabela4.append(dados)
        observacoes = pd.DataFrame(tabela4).T
        pasta = (filename+'/Observações.xlsx')
        caminho = Path('r',pasta)
        if not caminho.exists():
            writer = pd.ExcelWriter(pasta)
            observacoes.to_excel(writer, index=False)
            writer.save()
        else:
            writer = pd.ExcelWriter(pasta, engine='openpyxl')
            writer.book = load_workbook(pasta)
            writer.sheets = dict((ws.title, ws) for ws in writer.book.worksheets)
            reader = pd.read_excel(pasta)
            observacoes.to_excel(writer, index=False, header=False, startrow=len(reader) + 1)
            writer.close()
    except NoSuchElementException:
        pass

    #Last Row
    tabela5 = []
    dados = driver.find_elements_by_xpath('//div[@class="tela_impressao"]')[-1]
    tab = dados.find_elements_by_tag_name('b')
    tabela5.append(artl)
    for grade in tab: tabela5.append(grade.text)
    info1 = pd.DataFrame(tabela5).T
    info1.columns= ['ART', 'Situação', 'Baixa']
    pasta = (filename+'/info.xlsx')
    caminho = Path(pasta)
    if not caminho.exists():
        writer = pd.ExcelWriter(pasta, engine='openpyxl')
        info1.to_excel(writer, index=False)
        writer.save()
    else:
        writer = pd.ExcelWriter(pasta, engine='openpyxl')
        writer.book = load_workbook(pasta)
        writer.sheets = dict((ws.title, ws) for ws in writer.book.worksheets)
        reader = pd.read_excel(pasta)
        info1.to_excel(writer, index=False, header=False, startrow=len(reader) + 1)
        writer.close()

Print: https://ibb.co/52JDJ4q

Quando o ultimo é salvo, ele apenas salva a primeira coluna, mas quando verifico o dataframe, ele está completo. Excel: https://ibb.co/bF8CVGB

Alguém pode me salvar?

import pandas as pd from pathlib import Path from selenium.common.exceptions import NoSuchElementException from openpyxl import load_workbook try: observacoes = pd.DataFrame([10,20,30]) pasta = ('C:/Users/igor_/Desktop/duvida/Observações.xlsx') caminho = Path('r',pasta) if not caminho.exists(): writer = pd.ExcelWriter(pasta) # pylint: disable=abstract-class-instantiated observacoes.to_excel(writer, index=False) writer.save() else: writer = pd.ExcelWriter(pasta, engine='openpyxl') # pylint: disable=abstract-class-instantiated writer.book = load_workbook(pasta) writer.sheets = dict((ws.title, ws) for ws in writer.book.worksheets) reader = pd.read_excel(pasta) observacoes.to_excel(writer, index=False, header=False, startrow=len(reader) + 1) writer.close() except NoSuchElementException: pass info1 = pd.DataFrame([10,20,30]) info1.columns= ['ART'] pasta = ('C:/Users/igor_/Desktop/duvida/info.xlsx') caminho = Path(pasta) if not caminho.exists(): writer = pd.ExcelWriter(pasta, engine='openpyxl')# pylint: disable=abstract-class-instantiated info1.to_excel(writer, index=False) writer.save() else: writer = pd.ExcelWriter(pasta, engine='openpyxl')# pylint: disable=abstract-class-instantiated writer.book = load_workbook(pasta) writer.sheets = dict((ws.title, ws) for ws in writer.book.worksheets) reader = pd.read_excel(pasta) info1.to_excel(writer, index=False, header=False, startrow=len(reader) + 1) writer.close()