如何在laravel上返回重定向

我在laravel 4上遇到了返回重定向的问题。如何返回有错误的重定向？

public function Verify( $data )
{
    try
    {
        $this->_initSoap( $data['store_url'] );
    } catch ('SoapFault $e) {
        // login failed logic
        $faultcode = $e->faultcode; // ex: 2
        $message = $e->faultstring; // ex: Access denied.
        //die('aaaa'. $message );// return redirect, etc...
        return 'Redirect::to('user/stores/magento')->with('error', $message);
    }
}

我遇到了类似的问题

 ErrorException (E_UNKNOWN) 
Header may not contain more than a single header, new line detected
Open: /var/www/haroldas.ggggg.com/vendor/symfony/http-foundation/Symfony/Component/HttpFoundation/Response.php
        // status
        header(sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText), true, $this->statusCode);
        // headers
        foreach ($this->headers->allPreserveCase() as $name => $values) {
            foreach ($values as $value) {
                header($name.': '.$value, false, $this->statusCode);
            }
        }