Updating all playlists produces some errors

[repejota]

Executing the management command manage update_all_playlists | grep ERROR produces the following list of errors:

ERROR: Youtube Data API does not return anything for playlist PLhr1KZpdzukcip4KMGgaKyIP
ERROR: Youtube Data API does not return anything for playlist PLQ176FUIyIUY6UK1cgVsbdPY
ERROR: Youtube Data API does not return anything for playlist PLIIjEI2fYC-DBvLGbhw_SkeH
ERROR: Youtube Data API does not return anything for playlist PLoxsuhBe-jd85-_rhcBYsuXx
ERROR: Youtube Data API does not return anything for playlist PL81sUbsFNc5Y-jbEC1y5BWen
ERROR: Youtube Data API does not return anything for playlist PLuVqdWOQ-PNkImAnAzU8QJ9g
ERROR: Youtube Data API does not return anything for playlist PLGz_X9w9raXeT-z_rcZ9yF0k
ERROR: Youtube Data API does not return anything for playlist PLEfMnf7gx29r-jl-RjuhmEK1
ERROR: Youtube Data API does not return anything for playlist PLb0IAmt7-GS3fZ46IGFirdqK
ERROR: Youtube Data API does not return anything for playlist PLGz_X9w9raXcOsB_dT26iu0B
ERROR: Youtube Data API does not return anything for playlist PLkA60AVN3hh9gnrYwNO6zTb9
ERROR: Youtube Data API does not return anything for playlist PLlgxAbM67lYKz_NssZ1DdDwI
ERROR: Youtube Data API does not return anything for playlist PL0CdgOSSGlBYnHAl_DZoy9BW
ERROR: Youtube Data API does not return anything for playlist PLb0IAmt7-GS0M8Q95RIc2lOM

Check what's happening with this playlists, and its videos and decide what to do:

• Delete the playlist?
• Unpublish the playlist? (in case its videos are still active but playlist orphan)

[repejota]

Looks like it is impossible to get the playlist where belongs a video:
https://stackoverflow.com/questions/30344395/find-playlists-containing-a-video-on-youtube

So:

• We should rely better on channel and do not trust on playlists more than for importing purposes.
• Channel field on videos will not be deleted, because if the playlist dissapears those videos may be orphaned.
• In case a playlist produce an error the work to do is to search (manually) the playlist again and update erroring playlist videos on the database with the new playlistId found 😤