ValueError: not enough values to unpack (expected 4, got 3) [Regression in file uploading mechanism, "500 INTERNAL ERROR"]

[deldesir]

Regression in the file uploading mechanism causing a ""500 INTERNAL ERROR"

Traceback (most recent call last):
  File "/usr/local/calibre-web-py3/cps/editbooks.py", line 452, in meta
    resp = move_mediafile(requested_file, current_user_name, shelf_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/calibre-web-py3/cps/editbooks.py", line 388, in move_mediafile
    (
ValueError: not enough values to unpack (expected 4, got 3)

[holta]

Somewhat related:

• Display video/bookshelf original URL (or canonical URL if possible!) to all users [ASIDE: upload of offline video works, despite red error "Failed to Move Cover File" in web UI] #107 (comment)
• Uploading videos via Calibre-Web fails - 500 Internal Server Error [if filename contains square brackets] #203
• PR Make image and videos uploads use the same data structure #207
• PR Fix video upload failure [e.g. filenames that contain square brackets] #208