LoginUsingId question

So I am using a route to quickly login a user from an external call Works as simple as below

    $userId = request('user_id');
    Auth::loginUsingId($userId);
    

});```

But althought its not a secure app (and does not have to be) , I wanted to add a small protection from a token post included
So I added the below code and loginusingId stops working, any explanation why or what stops its execution ?

Not working code :


`Route::get('/loginas', function () {
    $userId = request('user_id');
    $rtoken = request('rtoken');
//testing referrer protection
 $appsd = env('APP_secret_digit');
 $token= $appsd*$userId;
 echo $token;
 echo $rtoken;
 if ($token == $rtoken) {
  //echo "true"; / shows up to here.. but no longer keeps session
    Auth::loginUsingId($userId);
 }



    

});`