[sonata admin] argument "$code" of method
按照這裏，在 AppBundle中的Controller建立了 CategoryAdmin 類，當運行html
php bin/console server:start
出現code
Cannot autowire service "AppBundle\Controller\CategoryAdmin": argument "$code" of method "Sonata\AdminBundle\Admin\AbstractAdmin::__construct()" has no type-hint, you should configure its value explicitly.
經過搜索資料，找到 Empty Dashboard Symfony3 sonata adminBundle 最後比對才發現，須要把 src/AppBundle/Controller/CategoryAdmin.php 放入到 src/AppBundle/Admin/CategoryAdmin.php ，
而後再運行 php bin/console server:start 就啓動成功了server
最終的效果htm
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