Netsuite API calling

Question

I am trying to call netsuite API in laravel using guzzle But it showing Unauthorized 401 status code. It is working in Curl. I am setting header according to documentation

Pasted Error here which is showing

{"type":"https://www.rfc-editor.org/rfc/rfc9110.html#section-15.5.2","title":"Unauthorized","status":401,"o:errorDetails":[{"detail":"Invalid login attempt. For more details, see the Login Audit Trail in the NetSuite UI at Setup > Users/Roles > User Management > View Login Audit Trail.","o:errorCode":"INVALID_LOGIN"}]}

Here is my code I am using

              public function TestNsAPI`enter code here`()
                {
                    $client = new Client(['verify' => false]);
                    $url = $baseurl."/services/rest/record/v1/inventoryItem";
                    $method = "GET";
                    $nonce = md5(mt_rand());
                    $timestamp = time();
                    $signatureMethod = 'HMAC-SHA256';
                    $version = "1.0";
            
                    $baseString = restletBaseString($method, $url,config('netsuite.customerKey'),
                    config('netsuite.accessToken'), $nonce, $timestamp, $version, $signatureMethod,null);
            
                    $key = rawurlencode(config('netsuite.customerSecret')) .'&'. rawurlencode(config('netsuite.tokenSecret'));
            
                    $signature = base64_encode(hash_hmac('sha256', $baseString, $key, true));
            
                    $header = 'OAuth '
                        .'realm="' . rawurlencode(config('netsuite.netsuiteAccount')) .'", '
                        .'oauth_consumer_key="' . rawurlencode(config('netsuite.customerKey')) .'", '
                        .'oauth_token="' . rawurlencode(config('netsuite.accessToken')) .'", '
                        .'oauth_nonce="' . rawurlencode($nonce) .'", '
                        .'oauth_timestamp="' . rawurlencode($timestamp) .'", '
                        .'oauth_signature_method="' . rawurlencode($signatureMethod) .'", '
                        .'oauth_version="' . rawurlencode($version) .'", '
                        .'oauth_signature="' . rawurlencode($signature) .'"';
            
                        $response = $client->get($url,['headers' => ['Content-Type' => 'application/json','Authorization' => $header] ]);
                         $data = json_decode($response->getBody()->getContents(), true);
                        dd($data);
              
                }