'use strict';

module.exports = {
  up: async queryInterface => {
    await queryInterface.sequelize.query(`
      UPDATE "Collectives"
        SET "slug" = UPPER("slug")
      WHERE
        "type" = 'VENDOR';
    `);
    await queryInterface.sequelize.query(`
      UPDATE "CollectiveHistories"
        SET "slug" = UPPER("slug")
      WHERE
        "type" = 'VENDOR';
    `);
  },
};

@@ -376,11 +376,59 @@
 );%0A  %7D,%0A
+  down: async () =%3E %7B%0A    // Nothing to do%0A  %7D,%0A
 %7D;%0A

Add empty down method