Symfony routes not working anymore - symfony

Question

I have an application been working on for a while with a fully working login and creating new users functionalities, and out of no where i was trying to switch the user -to change the role- i wasnt able to login again. after some digging around the code i found out that 302 code status is being thrown after login and therefor the logging process stopped working.
i had this code in my SecurityController:
return new RedirectResponse('/sys-admin/');
and changing that code to this :
return $this->forward('AppBundle:SystemAdmin:index', array());
make it work and i am logged in again but now all my routes stopped working, i mean in my views there are buttons something like :
<a href="{{ path('system_admin_client') }}"
class="btn pmd-btn-flat btn-default">Go!</a>
when i click the button i am logged out and redirected to the login page and in the network tab in any browser i can see that the route sys-admin/client have status code 302 since i was logged out.
running bin/console debug:router shows me all my routes are there and for this example running bin/console router:match /sys-admin/client also shows me a match with the controller and every information.
this is how my routes looks like:
app_system_admin:
prefix: /sys-admin
resource: "#AppBundle/Resources/config/routing/sys_admin.yml"
sys_admin.yml
system_admin_client:
path: /client
defaults: { _controller: AppBundle:SystemAdmin:index}
I cant figure out to know what went wrong! any help will be appreciated. Thanks!
more info: i am using Symfony 4.0.4 and if i tried to do something like forwarding on any route its working but the redirecting is not.

Answer 1

The 302 HTTP status code is for a redirection, it's not an error.
It was normal since you returned a RedirectResponse.
In my opinion the problem doesn't come from the redirection.
You should put it back and check the user-switching function (or the user itself).
If you do that, don't hardcode the redirection path. Use a Symfony method to generate it, like:
return $this->redirectToRoute('system_admin_index');

Answer 2

I found the solution after a lot of investigating. I am using docker to make the whole app running and for some reason php-fpm logs showed no errors but the error was the php session is being broken because of no access for the user, changing to root user on docker fixed this issue since root had access.