File "main.py", line 247, in process
    pdf_writer.append(pdf_reader, [page_num])
  File "venv/lib/python3.10/site-packages/pypdf/_writer.py", line 2804, in append
    self.merge(
  File "venv/lib/python3.10/site-packages/pypdf/_utils.py", line 466, in wrapper
    return func(*args, **kwargs)
  File "venv/lib/python3.10/site-packages/pypdf/_writer.py", line 3001, in merge
    self.add_filtered_articles("", srcpages, reader)
  File "venv/lib/python3.10/site-packages/pypdf/_writer.py", line 3088, in add_filtered_articles
    thr = a.get_object()["/T"]
  File "venv/lib/python3.10/site-packages/pypdf/generic/_data_structures.py", line 320, in __getitem__
    return dict.__getitem__(self, key).get_object()
KeyError: '/T'