Argument 1 passed to App\Paywall\Paywall::verifySitesFree() must be of the type string, null given, called in /mnt/home/opovo/public_html/reboot_portal/app/Support/SeoSupport.php on line 31

365     /**
366      * Verifica se a matéria acessada pertence a um site aberto
367      *
368      * @param string $url
369      * @return Paywall
370      * @author Junior <hamilton.junior@opovodigital.com>
371      */
372     public function verifySitesFree(string $url) : Paywall
373     {
374         $mongoDb     = new MongoDB('opovo.paywall_sites');
375         $allSiteFree = $mongoDb->findAll();
376 
377         foreach($allSiteFree as $site){
378             if(strpos($url, $site->site_path) !== false){
379                 $this->verifySitesFree = true;