Symfony 2 - Fatal error: Cannot redeclare class SessionHandlerInterface in C:\…\app\cache\dev\classes.php on line 532

Question

After reinstalling my wamp environment this error message is showing on screen after I open app_dev.php:

Fatal error: Cannot redeclare class SessionHa

Answer 1

The simple clear cache didn't work for me. It required that the production cache be cleared using the command below.

php app/console cache:clear --env=prod --no-debug