代码写不出来啊，将excel工作表中特定位置的数字填入word文档对应的位置，一直报错

from docxtpl import DocxTemplate
from openpyxl import load_workbook
import os

def replace(obj):
    if obj is None:
        obj = ''
        return obj

wb = load_workbook('C:\\Users\\XXX\\Desktop\\August.xlsx')  #需要填入Word的Excel工作簿的地址
ws = wb['Topline S&P']  #工作簿中表格的名称,ws表示工作表
contexts = []

data=tuple(ws)
for i in range(29):
    for j in range(16):
        a1 = ws[data[28][7]].value
        a2 = ws[data[28][14]].value
  
    context = {"a1": a1, "a2": a2} #变量名称与Word文档中的占位符要一一对应
    contexts.append(context)
contexts
aa
# 创建要保存的文件夹
os.mkdir("C:\\Users\\XXX\\Desktop\\Report")

for context in contexts:
    print(context)
    tpl = DocxTemplate('C:\\Users\\XXX\\Desktop\\Monthly Report_Issue 94_20210827.docx')  #需要填入的Word文档的的地址
    tpl.render(context)
    tpl.save("C:\\Users\\XXX\\Desktop\\Report.docx")

报错：File "D:\Download\lib\site-packages\openpyxl\utils\cell.py", line 133, in range_boundaries
    m = ABSOLUTE_RE.match(range_string)

TypeError: expected string or bytes-like object

代码22、23行是啥？

python操作word 推荐 python-docx