Error message

• Notice: Undefined index: default in custom_videos_get_playlist_feed() (line 489 of /home/cityoflawrence7/public_html/sites/all/modules/custom/custom_videos/custom_videos.module).
• Notice: Undefined index: medium in custom_videos_get_playlist_feed() (line 490 of /home/cityoflawrence7/public_html/sites/all/modules/custom/custom_videos/custom_videos.module).
• Notice: Undefined index: high in custom_videos_get_playlist_feed() (line 491 of /home/cityoflawrence7/public_html/sites/all/modules/custom/custom_videos/custom_videos.module).