FOSUserBundle fos UserBundle\Entity\User is not a valid entity or mapped super class

a common problem on installing FOS followed by the official instruction is

UserBundle\Entity\User is not a valid entity or mapped super class


this is because you need generate the UserBundle first in

Step 4: Create your User class

it's recommended use command to generate the bundle

php app/console generate:bundle --namespace=Acme/UserBundle

NOTE:

Step 4: Create your User class

is not simply just create the user.php file in place and paste the content from instruction

you need create the entire UserBundle

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