app.request.get('perspective') returning array instead of string

[cancan101]

Getting this error:

Twig\Error\RuntimeError

An exception has been thrown during the rendering of a template ("strip_tags(): Argument #1 ($string) must be of type string, array given") in "PimcoreAdmin/admin/login/login.html.twig" at line 5.

admin-ui-classic-bundle/templates/admin/login/login.html.twig

Line 5 in 094e9c5

<form id="form-element" method="post" action="{{ path('pimcore_admin_login_check', {'perspective' : app.request.get('perspective')|striptags}) }}">

Currently on pimcore/admin-ui-classic-bundle v1.7.7.1