Downloads that pull from libgen are met with 404 error

[brennanmuir]

Search for a book, begins to download using libgen link, download fails with 404 error. When I use the libgen link provided in the error, I reach a forbidden page.

calibre, version 7.5.1 (linux, embedded-python: True)
Failed to download e-book: Failed: Downloading Harry Potter and the Sorcerer's Stone.libgen.li.epub

Starting job: Downloading Harry Potter and the Sorcerer's Stone.libgen.li.epub 
Job: "Downloading Harry Potter and the Sorcerer's Stone.libgen.li.epub" failed with error: 
Traceback (most recent call last):
  File "calibre/gui2/threaded_jobs.py", line 82, in start_work
  File "calibre/gui2/ebook_download.py", line 84, in __call__
  File "calibre/gui2/ebook_download.py", line 100, in _download
  File "calibre/gui2/ebook_download.py", line 67, in download_file
  File "mechanize/_mechanize.py", line 257, in open
  File "mechanize/_mechanize.py", line 313, in _mech_open
mechanize._response.get_seek_wrapper_class.<locals>.httperror_seek_wrapper: HTTP Error 404: Not Found
 
Called with args: (<calibre.gui2.ui.Main object at 0x15096a951cf0>, None, 'http://libgen.li/https://cdn2.booksdl.org\\get.php?md5=f3c217db4187442b3751070ef7d90e4a&key=8B0ATCEIGBQ9KOHI', "Harry Potter and the Sorcerer's Stone.libgen.li.epub", '', True, [], <bound method StorePlugin.create_browser of <calibre_plugins.store_annas_archive.annas_archive.AnnasArchiveStore object at 0x1509358d4710>>) {'notifications': <queue.Queue object at 0x15090fb7c1d0>, 'abort': <threading.Event at 0x15090f93d110: unset>, 'log': <calibre.utils.logging.GUILog object at 0x15090fb7e450>}