IndexError: list index out of range

[ad-si]

$ python3 --version
Python 3.9.0

$ fileinfo py
Traceback (most recent call last):
  File "/Users/adrian/Library/Python/3.9/bin/fileinfo", line 71, in <module>
    main()
  File "/Users/adrian/Library/Python/3.9/bin/fileinfo", line 63, in main
    file_type = get_file_type(html)
  File "/Users/adrian/Library/Python/3.9/bin/fileinfo", line 18, in get_file_type
    return re.findall('<span itemprop="name">(.*?)</span></h2>', html)[0]
IndexError: list index out of range