Почему не работает $model->save() yii2

Контроллер

$companyObj = new Company();
           
$city = City::findOne(['name' => $post["CabinetRegistrationForm"]["city_name"]]);
            
$companyObj->name = $post["CabinetRegistrationForm"]["company_name"];
$companyObj->activity = 1;
$companyObj->district_id = $city->district_id;
$companyObj->region_id = $city->region_id;
$companyObj->municipality_id = $city->municipality_id;
$companyObj->city_id = $city->id;
$companyObj->address = $post["CabinetRegistrationForm"]["address"];
$companyObj->inn = $post["CabinetRegistrationForm"]["inn"];
$companyObj->approved = 0;
$companyObj->head_fio = $post["CabinetRegistrationForm"]["head_fio"];
$companyObj->phone = $post["CabinetRegistrationForm"]["phone"];
           
$companyObj->save();

Модель

namespace commonmodels;

use mdmadminmodelsAuthItem;
use Yii;
use yiibaseNotSupportedException;
use yiibehaviorsTimestampBehavior;
use yiidbActiveQuery;
use yiidbActiveRecord;
use yiidbQuery;
use yiihelpersArrayHelper;
use yiiwebIdentityInterface;

/**
 * This is the model class for table "company".
 *
 * @property int $id
 * @property string $name
 * @property string $org_form
 * @property string $activity
 * @property int $district_id
 * @property int $region_id
 * @property int $municipality_id
 * @property int $city_id
 * @property string $address
 * @property string $inn
 * @property int $approved
 * @property string $head_fio
 * @property string $phone
 * @property string $email
 * @property string $site
 *
 * @property DistrictModel $district
 * @property Municipality $municipality
 * @property City $city
 * @property User[] $users
 * @property SchoolClass[] $classes
 */
class Company extends commoncomponentsActiveRecord
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return 'company';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['name', 'org_form', 'activity'], 'required'],
            [['district_id', 'region_id', 'municipality_id', 'city_id', 'approved'], 'integer'],
            [['address'], 'string'],
            [['name', 'org_form', 'activity', 'inn', 'head_fio', 'email', 'site', 'presentation_url'], 'string', 'max' => 255],
            [['phone'], 'string', 'max' => 50],
            [['district_id'], 'exist', 'skipOnError' => true, 'targetClass' => DistrictModel::className(), 'targetAttribute' => ['district_id' => 'id']],
            [['municipality_id'], 'exist', 'skipOnError' => true, 'targetClass' => Municipality::className(), 'targetAttribute' => ['municipality_id' => 'id']],
            [['presentation_url'], 'trim'],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => Yii::t('app', 'ID'),
            'name' => Yii::t('app', 'Name'),
            'org_form' => Yii::t('app', 'Org Form'),
            'activity' => Yii::t('app', 'Activity'),
            'district_id' => Yii::t('app', 'District ID'),
            'region_id' => Yii::t('app', 'Region ID'),
            'municipality_id' => Yii::t('app', 'Municipality ID'),
            'city_id' => Yii::t('app', 'City ID'),
            'address' => Yii::t('app', 'Address'),
            'inn' => Yii::t('app', 'Inn'),
            'approved' => Yii::t('app', 'Approved'),
            'head_fio' => Yii::t('app', 'Head Fio'),
            'phone' => Yii::t('app', 'Phone'),
            'email' => Yii::t('app', 'Email'),
            'site' => Yii::t('app', 'Site'),
            'presentation_url' => Yii::t('app', 'Presentation Url'),
        ];
    }

Вьюха

<?php $form = ActiveForm::begin(['id' => 'form-signup']); ?>

<div class="hidden">
<?= $form->field($model, 'role')->textInput() ?>
</div>
                
<?= $form->field($model, 'second_name')->textInput() ?>
<?= $form->field($model, 'name')->textInput() ?>
<?= $form->field($model, 'last_name')->input('last_name') ?>      
<?= $form->field($model, 'email')->input('email') ?>
<?= $form->field($model, 'inn')->widget(SuggestionsWidget::class, [
      'token' => '*******************',
                    
]) ?>
               
                
<?php if ($model->role == RoleModel::ROLE_RESEARCH_COORDINATOR_OO): ?>                  
<?= $form->field($model, 'company_name')->textarea(); ?>
<?= $form->field($model, 'city_name')->hiddenInput()->label(false); ?>
<?= $form->field($model, 'address')->hiddenInput()->label(false); ?>
<?= $form->field($model, 'head_fio')->hiddenInput()->label(false); ?>
<?= $form->field($model, 'phone')->hiddenInput()->label(false); ?>
<?php endif; ?>
..........

Вроде бы все правильно, никаких ошибок не выводится , $companyObj->errors – пустой массив, но $companyObj->save выдаёт false. В БД не появляется новая строка.
Помогите пожалуйста.