Call to a member function find () on a non-object

I've been breaking my head here for some time and have not yet understood the error. I'm learning about CakePHP. I made the MVC from the Regionals table manually, and for others, I used the bake. The problem is that when I try to add a new congregation, this title error is returned. I searched elsewhere, but I have not found a solution yet.

Controller CongregacaosController.php

/**
 * Components
 *
 * @var array
 */
    public $components = array('Paginator');

/**
 * index method
 *
 * @return void
 */
    public function index() {
        $this->Congregacao->recursive = 0;
        $this->set('congregacaos', $this->paginate());
    }

/**
 * view method
 *
 * @throws NotFoundException
 * @param string $id
 * @return void
 */
    public function view($id = null) {
        if (!$this->Congregacao->exists($id)) {
            throw new NotFoundException(__('Invalid congregacao'));
        }
        $options = array('conditions' => array('Congregacao.' . $this->Congregacao->primaryKey => $id));
        $this->set('congregacao', $this->Congregacao->find('first', $options));
    }

/**
 * add method
 *
 * @return void
 */
    public function add() {
        if ($this->request->is('post')) {
            $this->Congregacao->create();
            if ($this->Congregacao->save($this->request->data)) {
                $this->Session->setFlash(__('The congregacao has been saved'), 'flash/success');
                $this->redirect(array('action' => 'index'));
            } else {
                $this->Session->setFlash(__('The congregacao could not be saved. Please, try again.'), 'flash/error');
            }
        }
        $regionals = $this->Congregacao->Regional->find('list');
        $this->set(compact('regionals'));
    }

/**
 * edit method
 *
 * @throws NotFoundException
 * @param string $id
 * @return void
 */
    public function edit($id = null) {
        $this->Congregacao->id = $id;
        if (!$this->Congregacao->exists($id)) {
            throw new NotFoundException(__('Invalid congregacao'));
        }
        if ($this->request->is('post') || $this->request->is('put')) {
            if ($this->Congregacao->save($this->request->data)) {
                $this->Session->setFlash(__('The congregacao has been saved'), 'flash/success');
                $this->redirect(array('action' => 'index'));
            } else {
                $this->Session->setFlash(__('The congregacao could not be saved. Please, try again.'), 'flash/error');
            }
        } else {
            $options = array('conditions' => array('Congregacao.' . $this->Congregacao->primaryKey => $id));
            $this->request->data = $this->Congregacao->find('first', $options);
        }
        $regionals = $this->Congregacao->Regional->find('list');
        $this->set(compact('regionals'));
    }

/**
 * delete method
 *
 * @throws NotFoundException
 * @throws MethodNotAllowedException
 * @param string $id
 * @return void
 */
    public function delete($id = null) {
        if (!$this->request->is('post')) {
            throw new MethodNotAllowedException();
        }
        $this->Congregacao->id = $id;
        if (!$this->Congregacao->exists()) {
            throw new NotFoundException(__('Invalid congregacao'));
        }
        if ($this->Congregacao->delete()) {
            $this->Session->setFlash(__('Congregacao deleted'), 'flash/success');
            $this->redirect(array('action' => 'index'));
        }
        $this->Session->setFlash(__('Congregacao was not deleted'), 'flash/error');
        $this->redirect(array('action' => 'index'));
    }
}

Model Congregacao.php

<?php
App::uses('AppModel', 'Model');
/**
 * Congregacao Model
 *
 * @property Regionals $Regionals
 * @property Membro $Membro
 */
class Congregacao extends AppModel {

/**
 * Validation rules
 *
 * @var array
 */
    public $validate = array(
        'nome' => array(
            'notEmpty' => array(
                'rule' => array('notEmpty'),
                //'message' => 'Your custom message here',
                //'allowEmpty' => false,
                //'required' => false,
                //'last' => false, // Stop validation after this rule
                //'on' => 'create', // Limit validation to 'create' or 'update' operations
            ),
        ),
        'regionals_id' => array(
            'numeric' => array(
                'rule' => array('numeric'),
                //'message' => 'Your custom message here',
                //'allowEmpty' => false,
                //'required' => false,
                //'last' => false, // Stop validation after this rule
                //'on' => 'create', // Limit validation to 'create' or 'update' operations
            ),
        ),
    );

    //The Associations below have been created with all possible keys, those that are not needed can be removed

/**
 * belongsTo associations
 *
 * @var array
 */
    public $belongsTo = array(
        'Regionals' => array(
            'className' => 'Regionals',
            'foreignKey' => 'regionals_id',
            'conditions' => '',
            'fields' => '',
            'order' => ''
        )
    );

/**
 * hasMany associations
 *
 * @var array
 */
    public $hasMany = array(
        'Membro' => array(
            'className' => 'Membro',
            'foreignKey' => 'congregacao_id',
            'dependent' => false,
            'conditions' => '',
            'fields' => '',
            'order' => '',
            'limit' => '',
            'offset' => '',
            'exclusive' => '',
            'finderQuery' => '',
            'counterQuery' => ''
        )
    );

}

Model Regional.php

    public $validate = array(
        'descricaoRegional' => array(
            'rule' => 'notEmpty'
        )
    );
}

Controller RegionalsController.php

    public function index() 
    {
        $this->set('regionals', $this->Regional->find('all'));
    }

    public function view($id = null)
    {
        $this->Regional->regionals_id = $id;
        $this->set('regional', $this->regional->read());
    }

     public function add() 
     {
        if ($this->request->is('post')) 
        {
            if ($this->Regional->save($this->request->data)) 
            {
                //$this->Session->setFlash("A regional foi adicionada com sucesso");
                $this->Session->setFlash(__("A regional foi adicionada com sucesso."), 'flash_success');
                $this->redirect(array('action' => 'index'));
            }
        }
    }

    public function edit($id = null) 
    {
        $this->Regional->id = $id;
        if ($this->request->is('get')) 
        {
            $this->request->data = $this->Regional->read();
        } 
        else
        {
            if ($this->Regional->save($this->request->data)) 
            {
                //$this->Session->setFlash("A regional $id foi atualizada.");
                $this->Session->setFlash(__("A regional $id foi atualizada."), 'flash_success');
                $this->redirect(array('action' => 'index'));
            }
        }
    }

    public function delete($regionals_id) 
    {
        if (!$this->request->is('post')) 
        {
            throw new MethodNotAllowedException();
        }
        if ($this->Regional->delete($regionals_id)) 
        {
            //$this->Session->setFlash("A regional $regionals_id foi deletada.");
            $this->Session->setFlash(__("A regional $regionals_id foi deletada."), 'flash_danger');
            $this->redirect(array('action' => 'index'));
        }
    }
}

Thanks for any help.