CakePHP3 Cannot Associate and Extract Specific Records from Other Tables

mysql>show create table users\G
*************************** 1.row******************************
       Table—users
Create Table: CREATE TABLE `users`(
  `id`int(11) NOT NULL AUTO_INCREMENT,
  `email`varchar(255) NOT NULL,
  `password`varchar(255) NOT NULL,
  `nickname`varchar(30) NOT NULL,
  `profile_comment`varchar(100) NOT NULL,
  `created`datetime DEFAULT NULL,
  `modified`datetime DEFAULT NULL,
  PRIMARY KEY (`id`)
ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8mb4
1 row in set (0.00sec) mysql>show create tables\G

*************************** 1.row******************************
       Table:ices
Create Table: CREATE TABLE `ices`(
  `id`int(11) NOT NULL AUTO_INCREMENT,
  `user_id`int(11) NOT NULL,
  `manufacturer`varchar(50) NOT NULL,
  `ice_name`varchar(50) NOT NULL,
  `ice_fraver`varchar(50) NOT NULL,
  `price_no_tax`int (5) unsigned NOT NULL,
  `buy_year`int (4) unsigned NOT NULL,
  `buy_month`int(2) unsigned NOT NULL,
  `image_file`varchar(255) DEFAULT NULL,
  `created`datetime DEFAULT NULL,
  `modified`datetime DEFAULT NULL,
  `simple_comment`varchar(20) NOT NULL,
  `desc_comment`varchar(100) NOT NULL,
  `repeat_rate`int(11) DEFAULT NULL,
  `stock_rate`int(11) DEFAULT NULL,
  PRIMARY KEY(`id`),
  KEY`ice_fk`(`user_id`),
  CONSTRAINT`ice_fk`FOREIGN KEY(`user_id`)REFERENCES`users`(`id`)ON DELETE CASCADE ON UPDATE CASCADE
ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=utf8mb4
1 row in set (0.00 sec)

mysql>show create table comments\G
*************************** 1.row******************************
       Table:comments
Create Table: CREATE TABLE `comments`(
  `id`int(11) NOT NULL AUTO_INCREMENT,
  `ice_id`int(11) NOT NULL,
  `user_id`int(11) NOT NULL,
  `comment`varchar(100) NOT NULL,
  `repeat_rate`int(11) DEFAULT NULL,
  `stock_rate`int(11) DEFAULT NULL,
  `created`datetime DEFAULT NULL,
  `modified`datetime DEFAULT NULL,
  PRIMARY KEY(`id`),
  KEY`comments_fk`(`user_id`),
  KEY`comments_ices_fk`(`ice_id`),
  CONSTRAINT `comments_fk`FOREIGN KEY(`user_id`)REFERENCES `users`(`id`)ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `comments_ices_fk `FOREIGN KEY(`ice_id`) REFERENCES `ices`(`id`) ON DELETE CASCADE ON UPDATE CASCADE
ENGINE=InnoDB AUTO_INCREMENT=37 DEFAULT CHARSET=utf8mb4
1 row in set (0.00 sec)

class IcesController extensions AppController
{
    public function initialize()
    {
    parent::initialize();
    $this->Auth->allow(['index', 'view', 'search']);
    $this->loadModel('Comments');
    $this->loadModel('Users');

    }
Partial omission
public function search()
    {
        $ices = $this->Ices->find('all');
        $manufacturer=isset($this->request->query['manufacturer'])?$this->request->query['manufacturer']: null;
        $keyword=isset($this->request->query['keyword'])?$this->request->query['keyword']: null;

        if($manufacturer){
            $where = ['Ices.manufacturer' =>$manufacturer];
            if($keyword){
            $where ['OR'] ['Ices.ice_fraver LIKE'] = "%$keyword%";
            $where ['OR'] ['Ices.simple_comment LIKE'] = "%$keyword%";
            }                             
            $ices->where ($where)
            - > contain (['Users', 'Comments')
            ->all();
            $this->set('manufacturer', $manufacturer);
            $this->set('keyword', $keyword);
            $this->set('ices',$ices);
            $this->render('ranking');
    }
    }