Dropbox download_zip api

function dropbox_download_zip($folder_path, $file_name) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'https://content.dropboxapi.com/2/files/download_zip'); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_POST, 1); $headers = array(); $headers[] = "Authorization: Bearer " . DROPBOX_TOKEN . ""; $headers[] = "Dropbox-API-Arg: {\"path\": \"$folder_path\"}"; $headers[] = "Content-Type: application/octet-stream; charset=utf-8"; curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); $result = curl_exec($ch); curl_close($ch); if (curl_errno($ch)) { echo 'Error:' . curl_error($ch); } else { $file_name = $file_name . '.zip'; file_put_contents(get_home_path() . '/' . $file_name, $result); $zipFilePath = get_home_path() . $file_name; $zipBaseName = basename($zipFilePath); header("Content-Type: application/zip"); header("Content-Disposition: attachment; filename=$zipBaseName"); header("Content-Length: " . filesize($zipFilePath)); readfile($zipFilePath); unlink($zipFilePath); die(); } }

here is my code, but it only works on a local server, on a real site it produces such an error, why? https://monosnap.com/file/0Dxbpzchbiq8ngZRl42SNEHqbCvmi1