this error...

[VikasRana]

Traceback (most recent call last):
File "C:\Python37\Scripts\scribdl-script.py", line 11, in
load_entry_point('scribd-downloader==1.3.1', 'console_scripts', 'scribdl')()
File "C:\Python37\lib\site-packages\pkg_resources_init_.py", line 489, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "C:\Python37\lib\site-packages\pkg_resources_init_.py", line 2793, in load_entry_point
return ep.load()
File "C:\Python37\lib\site-packages\pkg_resources_init_.py", line 2411, in load
return self.resolve()
File "C:\Python37\lib\site-packages\pkg_resources_init_.py", line 2417, in resolve
module = import(self.module_name, fromlist=['name'], level=0)
File "C:\Python37\scribdl_init_.py", line 3, in
from .downloader import Downloader
File "C:\Python37\scribdl\downloader.py", line 9, in
from .pdf_converter import ConvertToPDF
File "C:\Python37\scribdl\pdf_converter.py", line 1, in
from md2pdf.core import md2pdf
File "C:\Python37\lib\site-packages\md2pdf-0.4-py3.7.egg\md2pdf_init_.py", line 3, in
from md2pdf.core import (
File "C:\Python37\lib\site-packages\md2pdf-0.4-py3.7.egg\md2pdf\core.py", line 3, in
from weasyprint import HTML, CSS
File "C:\Python37\lib\site-packages\weasyprint-51-py3.7.egg\weasyprint_init_.py", line 440, in
from .css import preprocess_stylesheet # noqa isort:skip
File "C:\Python37\lib\site-packages\weasyprint-51-py3.7.egg\weasyprint\css_init_.py", line 30, in
from . import computed_values, media_queries
File "C:\Python37\lib\site-packages\weasyprint-51-py3.7.egg\weasyprint\css\computed_values.py", line 18, in
from .. import text
File "C:\Python37\lib\site-packages\weasyprint-51-py3.7.egg\weasyprint\text.py", line 14, in
import cairocffi as cairo
File "C:\Python37\lib\site-packages\cairocffi-1.1.0-py3.7.egg\cairocffi_init_.py", line 50, in
('libcairo.so', 'libcairo.2.dylib', 'libcairo-2.dll'))
File "C:\Python37\lib\site-packages\cairocffi-1.1.0-py3.7.egg\cairocffi_init_.py", line 45, in dlopen
raise OSError(error_message) # pragma: no cover
OSError: no library called "cairo" was found
no library called "libcairo-2" was found
cannot load library 'libcairo.so': error 0x7e
cannot load library 'libcairo.2.dylib': error 0x7e
cannot load library 'libcairo-2.dll': error 0x7e