e2eTestsWithErrorFixed.js

it("removes a landing", function () {
  element.all(by.css('.delete')).first().click();

  ptor.driver.switchTo().alert().then( // <- this fixes the problem
    function (alert) {
      alert.accept();
    },
    function (error) {
    }
  );

  expect(
    element.all(
      by.repeater('landing in project.landings')).count()
  ).toBe(5);
});