When setting a Section for an Article, error message appears

Hi,

I have set up an OpenPublish site running in french.
Whenever I add an article and define a section for it, it will display the following error messages two times:

Notice: Undefined index: fr in views_node_taxonomy_filter_handler_filter_tid->query() (line 142 of /home/ledamaga/public_html/profiles/openpublish/modules/contrib/vntf/views_node_taxonomy_filter_handler_filter_tid.inc).
Warning: Invalid argument supplied for foreach() in views_node_taxonomy_filter_handler_filter_tid->query() (line 142 of /home/ledamaga/public_html/profiles/openpublish/modules/contrib/vntf/views_node_taxonomy_filter_handler_filter_tid.inc).

If I clear the section field for the given article, the error message disappears.

Any advice on what I should do?

TIA