Can not compose a file with WPS insert a text box

[vba34520]

First of all, thank you for your work!

Install

pip install docxcompose==1.3.4

Install WPS Office

Generate a Document

Insert a Text Box, and save as 1.docx

Code

from docx import Document
from docxcompose.composer import Composer

composer = Composer(Document())
composer.append(Document('1.docx'))
composer.save('result.docx')

It cause

Traceback (most recent call last):
  File "D:/mycode/test/1.py", line 5, in <module>
    composer.append(Document('1.docx'))
  File "C:\Users\Administrator\Envs\test\lib\site-packages\docxcompose\composer.py", line 51, in append
    self.insert(index, doc, remove_property_fields=remove_property_fields)
  File "C:\Users\Administrator\Envs\test\lib\site-packages\docxcompose\composer.py", line 76, in insert
    self.add_shapes(doc, element)
  File "C:\Users\Administrator\Envs\test\lib\site-packages\docxcompose\composer.py", line 190, in add_shapes
    img_part = doc.part.rels[rid].target_part
KeyError: None

Looking forward to your reply!