Undefined index

Got a same issue as https://www.drupal.org/node/2287521 but now under 7.x-3.x-dev

Am using:
Masonry Api 7.x-3.0-beta1+4-dev
Masonry Views: 7.x-3.0 (though Module overview indicates Version: 7.x-1.1???)
Masonry library: OK jQuery Masonry 3.3.2

Masonry
• Notice: Undefined index: masonry_width_unit in template_preprocess_views_view_masonry() (line 27 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_width_unit in template_preprocess_views_view_masonry() (line 28 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_width in template_preprocess_views_view_masonry() (line 28 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_center in template_preprocess_views_view_masonry() (line 37 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_width_unit in template_preprocess_views_view_masonry() (line 47 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_width in template_preprocess_views_view_masonry() (line 51 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_animated_duration in template_preprocess_views_view_masonry() (line 66 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_center in template_preprocess_views_view_masonry() (line 69 of /sites/all/modules/masonry/masonry_views/masonry_views.module).
• Notice: Undefined index: masonry_gutter in template_preprocess_views_view_masonry() (line 70 of /sites/all/modules/masonry/masonry_views/masonry_views.module).