Symfony 3.0.1 CSRF token present but invalid

Question

I am having this strange issue with a fresh Symfony 3.0.1 installation. I generated a new CRUD Controller with a Form PostType which contains an url and a title. Nothing fancy.<

Answer 1

I had the same on env=dev but not on preprod (symfony 4.4)

--Solution--

There was missing sessions dir in the root I have created one then the problem solved.

cheers