Possible bug on PS 1.7.4 beta 1 on PHP 7.2.5

[xavi]

Hello,

I am testing prestashop 1.7.4 on linux php 7.2.5 and I think I have found a bug. When you access admin page for the first time, it throws a "cannot use object as array" error.

It's on src/Adapter/Security/Admin.php line 82:

&& isset($event->getRequest()->attributes['exception'])

When I was testing it locally (windows php 7.2.0) it worked properly.

I commented this line and I could access the login page properly. Uncommenting it didn't make the error appear again.

Regards.