[vtg89]

I have used Calibre but for some reason it is NOT opening any books, I keep getting errors. Here is the error for one of the books:

calibre, version 5.4.2
ERROR: Loading book failed: Failed to open the book at D:\Calibre Library\Unknown\Archie Halloween Special 001 (2017) (27)\Archie Halloween Special 001 (2 - Unknown.epub. Click "Show details" for more info.

Failed to convert book: D:\Calibre Library\Unknown\Archie Halloween Special 001 (2017) (27)\Archie Halloween Special 001 (2 - Unknown.epub with error:
InputFormatPlugin: EPUB Input running
on D:\Calibre Library\Unknown\Archie Halloween Special 001 (2017) (27)\Archie Halloween Special 001 (2 - Unknown.epub
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
Traceback (most recent call last):
File "runpy.py", line 194, in _run_module_as_main
File "runpy.py", line 87, in _run_code
File "site.py", line 82, in <module>
File "site.py", line 77, in main
File "site.py", line 49, in run_entry_point
File "calibre\utils\ipc\worker.py", line 195, in main
File "<string>", line 1, in <module>
File "calibre\srv\render_book.py", line 865, in viewer_main
File "calibre\srv\render_book.py", line 856, in render_for_viewer
File "calibre\srv\render_book.py", line 834, in render
File "calibre\srv\render_book.py", line 649, in process_exploded_book
File "calibre\srv\render_book.py", line 333, in create_cover_page
File "calibre\srv\render_book.py", line 284, in find_epub_cover
StopIteration