Call to a member function getEmailForPasswordReset() on null - laravel

Question

I do not know why I get this error when I try to reset password.
I have another project with the same code and it works.
I noticed the error is in the "resources/views/auth/emails/password.php" file, that does have a null $user variable.
The strange thing is that in the function the view is called, the $user variable has value.
When the variable is passed to the view, it losts value.
public function emailResetLink(CanResetPasswordContract $user, $token, Closure $callback = null)
{
// We will use the reminder view that was given to the broker to display the
// password reminder e-mail. We'll pass a "token" variable into the views
// so that it may be displayed for an user to click for password reset.
$view = $this->emailView;
**// HERE THE $user VARIABLE HAS VALUE.**
**// IN THE $view VIEW THE $user VARIABLE IS NULL**
return $this->mailer->send($view, compact('token', 'user'), function ($m) use ($user, $token, $callback) {
$m->to($user->getEmailForPasswordReset());
if (! is_null($callback)) {
call_user_func($callback, $m, $user, $token);
}
});
}
UPDATED
This is the user model:
<?php
namespace App;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Zizaco\Entrust\Traits\EntrustUserTrait;
class User extends Authenticatable
{
use EntrustUserTrait; // add this trait to your user model
protected $fillable = [
'name', 'email'
];
protected $hidden = [
'password',
];
}

Answer 1

Got it,
the problem was a ViewComposer I had created and forgot.
This is the composer service provider:
class ComposerServiceProvider extends ServiceProvider
{
/**
* Bootstrap the application services.
*
* #return void
*/
public function boot()
{
// Using class based composers...
View::composer(
'*', 'App\Http\ViewComposers\UserComposer'
);
}
/**
* Register the application services.
*
* #return void
*/
public function register()
{
//
}
}
And this is (edited to make it work) the UserComposer class:
class UserComposer
{
/**
* constructor.
*/
public function __construct()
{
}
/**
* Bind data to the view.
*
* #param View $view
* #return void
*/
public function compose(View $view)
{
$excludedViews = ['auth.emails.password'];
if (!in_array($view->getName() , $excludedViews))
{
$view->with('user', session('user'));
}
}
}
With the "excludedViews" variable I can inject "user" variable in all routes except the reset password.