FIX ApcCache 'array_keys() expects parameter 1 to be array, boolean give...

```
lav45@lav45-K53SK ~/www/my/slot $ yii user/delete test2
PHP Warning 'yii\base\ErrorException' with message 'array_keys() expects parameter 1 to be array, boolean given'

in /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/caching/ApcCache.php:83

Stack trace:
#0 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/caching/Cache.php(235): yii\caching\ApcCache->setValues()
#1 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/caching/TagDependency.php(87): yii\caching\Cache->mset()
#2 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/caching/TagDependency.php(43): yii\caching\TagDependency::touchKeys()
#3 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/caching/Dependency.php(54): yii\caching\TagDependency->generateDependencyData()
#4 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/caching/Cache.php(193): yii\caching\Dependency->evaluateDependency()
#5 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/db/Schema.php(129): yii\caching\Cache->set()
#6 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/db/ActiveRecord.php(286): yii\db\Schema->getTableSchema()
#7 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/db/ActiveRecord.php(359): yii\db\ActiveRecord::getTableSchema()
#8 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/db/ActiveQueryTrait.php(132): yii\db\ActiveRecord::populateRecord()
#9 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/db/ActiveQuery.php(218): yii\db\ActiveQuery->createModels()
#10 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/db/ActiveQuery.php(287): yii\db\ActiveQuery->populate()
#11 /home/lav45.mint/www/my/slot/console/controllers/UserController.php(37): yii\db\ActiveQuery->one()
#12 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/base/InlineAction.php(55): console\controllers\UserController->actionDelete()
#13 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/base/InlineAction.php(55): ::call_user_func_array()
#14 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/base/Controller.php(150): yii\base\InlineAction->runWithParams()
#15 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/console/Controller.php(88): yii\base\Controller->runAction()
#16 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/base/Module.php(462): yii\console\Controller->runAction()
#17 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/console/Application.php(161): yii\base\Module->runAction()
#18 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/console/Application.php(137): yii\console\Application->runAction()
#19 /home/lav45.mint/www/my/slot/vendor/yiisoft/yii2/base/Application.php(371): yii\console\Application->handleRequest()
#20 /home/lav45.mint/www/my/slot/yii(30): yii\base\Application->run()
#21 {main}
```

function apc_store() return bool|array Returns TRUE on success or FALSE on failure | array with error keys
http://php.net/manual/en/function.apc-store.php