Laravel cant access next page because of trying to get property of non object error display error

I have given a code that I makes me a bit confused. If I go to my url, it gets me a error of trying to get property... and when i use dd for the $response it says null. Can someone tell me what should I do and why I always get this error? I know this error occur because the $response variable does not have and status object? Am I right? but when I dd $response it says null. Thanks in advance

My controller

public function pingDomain(Request $request){

        $host = $request->staging == 1 ? env('PROPNEX_IP') : env('PROPNEX_IP_PROD');
        $url = $host. '/propnex/index.php/domain/Ping_domain?domain='.urlencode($request->domain).'&host_ip='.$request->ip;

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url );
        curl_setopt($ch,CURLOPT_HTTPHEADER,[
            'Content-type: application/json'
        ]);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $response = json_decode(curl_exec($ch));
        // dd($response);
      //ERROR IS HERE IN IF STATEMENT
        if ($response->status == 0){

            $host = $request->staging == 1 ? env('PROPNEX_IP') : env('PROPNEX_IP_PROD');
            $url = $host . '/propnex/index.php/pnapi/addDomain?type=own&domain='.$request->domain. '&site-id='. $request->siteid;

            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url );
            curl_setopt($ch,CURLOPT_HTTPHEADER,[
                'Authentication: '.$request->agentid . ':'. $request->auth
            ]);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            $response = json_decode(curl_exec($ch));
            curl_close($ch);

            if($response->status == "ok"){
                return redirect()->route('ping-domain-success',[
                    "fname" => $request->fname,
                    "lname" => $request->lname,
                    "agentid" => $request->agenatid,
                    "auth" => $request->auth,
                    "email" => $request->email,
                    "prtname" => $request->prtname,
                    "cea"=> $request->cea,
                    "type" => $request->type,
                    "staging"=> $request->staging,
                    "domain" => $request->domain,
                    'status' => true,
                    "ip" => $request->ip,
                    "siteid"=> $request->siteid,
                    "isRenew" => $request->isRenew
                ]);
            }else{
                return redirect()->route('ping-domain-fail',[
                    "fname" => $request->fname,
                    "lname" => $request->lname,
                    "agentid" => $request->agenatid,
                    "auth" => $request->auth,
                    "email" => $request->email,
                    "prtname" => $request->prtname,
                    "cea"=> $request->cea,
                    "type" => $request->type,
                    "staging"=> $request->staging,
                    "domain" => $request->domain,
                    'status' => true,
                    "ip" => $request->ip,
                    "siteid"=> $request->siteid,
                    "isRenew" => $request->isRenew
                ]);
            }


        }else{
            return redirect()->route('ping-domain-fail',[
                "fname" => $request->fname,
                "lname" => $request->lname,
                "agentid" => $request->agenatid,
                "auth" => $request->auth,
                "email" => $request->email,
                "prtname" => $request->prtname,
                "cea"=> $request->cea,
                "type" => $request->type,
                "staging"=> $request->staging,
                "domain" => $request->domain,
                'status' => true,
                "ip" => $request->ip,
                "siteid"=> $request->siteid,
                "isRenew" => $request->isRenew
            ]);
        }
    }

via Chebli Mohamed