ModuleNotFoundError: No module named 'attr' when i run pdf-sign-cms.py from example

[saifullah5302411224]

this is my error,
i'm not change anything from github, just run install setup.py, and try examples

[saifullah5302411224]

Traceback (most recent call last):
File "pdf-sign-cms.py", line 49, in
main()
File "pdf-sign-cms.py", line 37, in main
datas = pdf.cms.sign(datau, dct,
File "C:\Python38\lib\site-packages\endesive\pdf\cms.py", line 501, in sign
return cls.sign(datau, udct, key, cert, othercerts, algomd, hsm, timestampurl)
File "C:\Python38\lib\site-packages\endesive\pdf\cms.py", line 399, in sign
self.makepdf(prev, udct, algomd, zeros)
File "C:\Python38\lib\site-packages\endesive\pdf\cms.py", line 234, in makepdf
from endesive.pdf.PyPDF2_annotate.annotations.text import FreeText
File "C:\Python38\lib\site-packages\endesive\pdf\PyPDF2_annotate_init_.py", line 2, in
from .annotator import PdfAnnotator
File "C:\Python38\lib\site-packages\endesive\pdf\PyPDF2_annotate\annotator.py", line 15, in
from .annotations.image import Image
File "C:\Python38\lib\site-packages\endesive\pdf\PyPDF2_annotate\annotations\image.py", line 19, in
from .rect import RectAnnotation
File "C:\Python38\lib\site-packages\endesive\pdf\PyPDF2_annotate\annotations\rect.py", line 13, in
from ..config.appearance import set_appearance_state
File "C:\Python38\lib\site-packages\endesive\pdf\PyPDF2_annotate\config\appearance.py", line 10, in
import attr
ModuleNotFoundError: No module named 'attr'

error log in above

[peuhrdf]

It worked for me:

pip install attrs

[m32]

dependencies updated in setup.py