error at rake assets:precompile

[jerome-diver]

NoMethodError: undefined method delete_descendants_on_node_delete=' for #<TheComments::Configuration:0x00000003f56df8> /srv/http/mon_site/config/initializers/the_comments.rb:14:inblock in <top (required)>'

with rails-4.2.7.1 and the_comments-2.3.1