I am getting invalid_url again and again with /save_url, https://api.dropboxapi.com/2/files/save_url

Hi,
I have an app that uses https://api.dropboxapi.com/2/files/save_url/save_url  endpoint to save urls from my ecommerce store to my dropbox. It was working fine early on locally bu as soon as I have deployed my script and check the logs after execution then this endpoint returns me a async_job_id which I use to check job status from https://api.dropboxapi.com/2/files/save_url/check_job_status and I get

function saveCustomilyOrders($dropboxURL, $accessToken, $customilyOrders)
{
    $apiURL = $dropboxURL . '/2/files/save_url';
    $headers = [
        'Authorization: Bearer ' . $accessToken,
        'Content-Type: application/json',
    ];
    foreach ($customilyOrders as $customilyOrder) {
        $path = $customilyOrder['path'];
        $url = $customilyOrder['url'];
        $payload = [
            'path' => $path,
            'url' => $url,
        ];
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $apiURL);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        if ($httpCode == 200) {
//Do some logs
        } elseif ($httpCode != 200) {
            throw new Exception('something went wrong while saving customily orders to dropbox: ' . $httpCode . ' ' . $response);
        }
        sleep(5);
    }
}

this is the snippet of function which I am using to /save_url enpoint.
Any suggestion in this issue will be highly appreciated as this is getting so much annyoying that it sometimes works and some times not and now its giving invalid_url again and again.
my json_encoded body looks like this in my curl request:
"{"path":"\/2023\/November\/#1123\/GP\/#1123_GK.eps","url":"https:\/\/cdn.customily.com\/ExportFile\/pf-dev-3\/b462fef1-aff5-42fa-aa77-f4eb0a6c7cce.eps"}" 
Greg-DB 
if you can look into this.
Thanks.