error while extending the bundle ClassNotFoundException

Question

I just created a new 2.8 Symfony project then added SonataAdminBundle when I tried to add SonataMediaundle as you can see in the screenshot after completing step 2.5 in the documentation I get this error that I just couldn't explain.

(I'm a new user so I can't add pictures yet so you'll only see the link)

Answer 1

first of all, Cerad, the problem solved thanks to you, by changing the autoload in my composer.json file from this:

...
"autoload": {
    "psr-4": {
        "AppBundle\\": "src/AppBundle"
    },

To this:

...
"autoload": {
    "psr-4": {
        "": "src/"
    },

then run command:

composer dumpautoload

and Voilà everything come back to work.