My laravel application is running inside an ec2 that has nginx listening to port 80

the traffic is redirected through aws application load balancer that redirect all traffic coming from port 80 to port 443

when i enter the application it appears as secured on chrome toolbar
however some of the pages are not and i notice that the blade template is rendering the urls as http
on my blade template for example i have

<form name="form" method="post" class="form-validation"
                    action="<?= route('backend.auth.login.post') ?>">

which renders to

<form name="form" method="post" class="form-validation" action="http://admin.myDomain.com/login"></form>

why is it not rendered to https and how can i force it?