Site Categories plugin error on activation

Network Activated Site Categories plugin and got this error:
"Notice: The called constructor method for WP_Widget in Bcat_WidgetCategorySites is deprecated since version 4.3.0! Use __construct()"

Same error references "WP_Widget in Bcat_WidgetCategorySite" and "WP_Widget in Bcat_WidgetCloud"

Thanks