So this module is not maintained anymore, any alternatives?

I installed this module to get the dialog function working, although I get this error:
Notice: Undefined property: flag_node::$form_interaction in flagging_dialog_flagging_form_link_alter() (rule 97 of .../sites/all/modules/flagging_form/flagging_dialog.module).

It seems this module is not updated for the current flag version, so I am wondering if there are any alternatives at this moment?