Crash when using album.ini

I open the issue as I don't have the time to debug it these days...

My demo site is broken since a few weeks. It updates the code from https://gitlab.com/paolobenve/myphotoshare (today 86f539fb..b1a3e66f development -> origin/development) then run the scanner, that crashes with error

       20 2022-10-17 07:37:26.157229    [PRE Expanding page title (string) to dictionary] page_title = 'DEMO MyPhotoShare' in options file
       28 2022-10-17 07:37:26.157257    [PRE geonames_language and language options unset] using system language (fr) for geonames_language option
    11970 2022-10-17 07:37:26.169227    [PRE WARNING]                                  /etc/myphotoshare/myphotoshare.excluded doesn't exist or unreadable, not using it
      491 2022-10-17 07:37:26.169718 [PRE options]                                  trying to create /var/www/html/myphotoshare_demo/cache/_tiny_urls.json (if it doesn't exist)...
       99 2022-10-17 07:37:26.169817    [PRE options]                                  /var/www/html/myphotoshare_demo/cache/_tiny_urls.json created (it didn't exist)!
       41 2022-10-17 07:37:26.169858 [PRE options: Nonexistent options.json file]   forcing recreation of everything unless options.json.<timestamp>'s exist'
   525729 2022-10-17 07:37:26.695587 [Saving password/codes files...]               
   440755 2022-10-17 07:37:27.136342 [Browsing]                                     start!
      237 2022-10-17 07:37:27.136579    [>>>>>>>>>>>  Entering directory]              /var/www/html/myphotoshare_demo/albums
      113 2022-10-17 07:37:27.136692       [not an album cache hit]                       json files not found in cache dir
    main()
  File "/var/www/html/myphotoshare_demo/myphotoshare/scanner/main.py", line 73, in main
    TreeWalker()
  File "/var/www/html/myphotoshare_demo/myphotoshare/scanner/TreeWalker.py", line 174, in __init__
    [folders_album, passwords_or_album_ini_processed] = self.walk(
  File "/var/www/html/myphotoshare_demo/myphotoshare/scanner/TreeWalker.py", line 3248, in walk
    album.read_album_ini(album_ini_file)
  File "/var/www/html/myphotoshare_demo/myphotoshare/scanner/PhotoAlbum.py", line 318, in read_album_ini
    Metadata.set_metadata_from_album_ini("album", self)
  File "/var/www/html/myphotoshare_demo/myphotoshare/scanner/PhotoAlbum.py", line 5277, in set_metadata_from_album_ini
    attributes = single_media.attributes
AttributeError: 'Album' object has no attribute 'attributes'

As the Primary demo site uses similar code and pictures (I assume), I don't understand why my version of the scanner code would crash...