Erro

Tentando rodar o codigo obtive o seguinte erro :

ReferenceError: updatedData is not defined
    at PessoaServices.updateRegister (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\src\services\Services.js:13:67)
    at PessoaController.updateData (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\src\controllers\Controller.js:19:50)
    at D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\src\routes\pessoasRoute.js:10:59
    at Layer.handle [as handle_request] (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\node_modules\express\lib\router\layer.js:95:5)
    at next (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\node_modules\express\lib\router\route.js:144:13)
    at Route.dispatch (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\node_modules\express\lib\router\route.js:114:3)
    at Layer.handle [as handle_request] (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\noejs-express-sequelize\node_modules\express\lib\router\layer.js:95:5)
    at D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\node_modules\express\lib\router\inde\express\lib\router\index.js:284:15
    at param (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\node_modules\express\lib\routmodules\express\lib\router\index.js:365:14)
    at param (D:\aprogramação\estudos\js\alura\nodejs-express-sequelize\node_modules\express\lib\routmodules\express\lib\router\index.js:376:14)

Fala que não foi declarado, porem foi no arquivo Controller.js ...

Segue abaixo os arquivos

Controller.js

class Controller {
  constructor (entityService){
    this.entityService = entityService;
  }

  async getAll(req, res) {
    try {
      const listOfPeople = await this.entityService.getAllRegisters();
      return res.status(200).json(listOfPeople);
    } catch (err) {
      //erro
    }
  }

  async updateData(req, res) {
    const { id } = req.params;
    const updatedData = req.body;
    try {
      const isUpdated = await this.entityService.updateRegister(updatedData, Number(id));

      if (!isUpdated) {
        return res.status(400).json( { message: 'data was not updated'} );
      }

      return res.status(200).json( { message: `id : ${id} updated!`} );
    } catch (err) {
      console.error(err);
    }
  }
}


module.exports = Controller;

Services.js

const dataSource = require('../models');

class Services {
  constructor(modelName) {
    this.model = modelName;
  }

  async getAllRegisters() {
    return dataSource[this.model].findAll();
  }

  async updateRegister() {
    const listOfUpdatedData = await dataSource[this.model].update(updatedData, {
      where: {id: id} 
    });

    console.log('service');

    return true;
  }
}

module.exports = Services;