Replace this: What happened? What were you trying to achieve?

Environment

Which environment were you using when you encountered the problem?

$ python -m platform
# Windows-10-10.0.19044-SP0

$ python -c "import PyPDF2;print(PyPDF2.__version__)"
# 2.2.0

Code + PDF

This is a minimal, complete example that shows the issue:

from PyPDF2 import PdfReader, PdfWriter, Transformation

reader = PdfReader('check.pdf')
writer = PdfWriter()
for page in reader.pages:
    page.add_transformation(Transformation().scale(0.5))
    writer.add_page(page)
writer.write('output.pdf')

Share here the PDF file(s) that cause the issue. The smaller they are, the
better. Let us know if we may add them to our tests!

check.pdf

Traceback

This is the complete Traceback I see:

output.pdf

By doing a scale with a factor of 0.5, I hope to scale the whole page, but the comments do not scale.

Source:

Result:

Hope:

Anyway, nice work, and thanks for your open source.