$(document).on('turbolinks:load', function() {

  $('.open-other-statements').click(function(e) {
    e.preventDefault();
    $('.other-statements').toggle();
  });

  $('#people-filter li').click(function() {
      $('#people-filter li').removeClass('active');
      $(this).addClass('active');
  });

  $(".tipsit").tipsy({ fade: false, gravity: "n", html: true });

});

import "tipsy-1a";

$(document).on('turbolinks:load', function() {

  $('.open-other-statements').click(function(e) {
    e.preventDefault();
    $('.other-statements').toggle();
  });

  $('#people-filter li').click(function() {
      $('#people-filter li').removeClass('active');
      $(this).addClass('active');
  });

  $(".tipsit").tipsy({ fade: false, gravity: "n", html: true });

});

Add missing import of tipsy