I'm also getting a huge number of e.g.

Info:   engine: transfer-status: link error (416, 'Requested Range Not
Satisfiable'): www.earlham.ac.uk/sites/default/files/images/articles/Keeping
Colombia megadiverse/colombian-trees.jpg

Which from searching the forum was a bug that was fixed years ago?  Again,
using the latest version HTTrack3.49-2