I followed the installation instructions step by step, yet when I tried to check if the template was succesfully installed first I got this error : " You have requested a non-existent parameter "templating.engines" " , so I added the templating section to the comfig.yml ( which should have been mentionned in the doc but is not ) and I launched the server once again and I got this error :
Unable to find template "AvanzuAdminThemeBundle:layout:default-layout.html.twig" (looked into: C:\wamp64\www\webis-symfony\webis\app/Resources/views, C:\wamp64\www\webis-symfony\webis\vendor\symfony\symfony\src\Symfony\Bridge\Twig/Resources/views/Form) in base.html.twig at line 1.

Debug info