Downloading a file from a shared folder PHP CURL

I have a business account and we have files in a shared folder. I currently can list of files within folder and this is an example of response I get 

 

 

 #items: array:500 [▼
    0 => array:12 [▼
      ".tag" => "file"
      "name" => "file.mp4"
      "parent_shared_folder_id" => "8693457712"
      "id" => "id:6_UMBoPQ5zAAAAAAAAAqcQ"
      "client_modified" => "2020-04-26T00:17:02Z"
      "server_modified" => "2020-11-19T14:20:38Z"
      "rev" => "015b4766e9661ac00000002062ba330"
      "size" => 1952676954
      "sharing_info" => array:3 [ …3]
      "is_downloadable" => true
      "has_explicit_shared_members" => false
      "content_hash" => "4e9217a7937cfae02cdb41d4baf9b1126f555729ee2a38a0b82d9d27ac320bae"
    ]

Now, everytime I try to download the file from dropbox to a local path I get folder not found. 

 

 

I'm using function below: 

 

 

  function dbx_get_file($token, $in_filepath, $out_filepath)
    {
        $out_fp = fopen($out_filepath, 'w+');
        if ($out_fp === FALSE)
            {
            echo "fopen error; can't open $out_filepath\n";
            return (NULL);
            }

        $url = 'https://content.dropboxapi.com/2/files/download';

        $header_array = array(
            'Authorization: Bearer ' . $token,
            'Content-Type:',
            'Dropbox-API-Arg: {"path":"' . $in_filepath . '"}',
            'Dropbox-Api-Select-User: dbmid:ffffffffff-fhfdjkfhkjfdshkj'

        );

        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header_array);
        curl_setopt($ch, CURLOPT_FILE, $out_fp);

        

        $metadata = null;
        curl_setopt($ch, CURLOPT_HEADERFUNCTION, function ($ch, $header) use (&$metadata)
            {
            $prefix = 'dropbox-api-result:';
            if (strtolower(substr($header, 0, strlen($prefix))) === $prefix)
                {
                $metadata = json_decode(substr($header, strlen($prefix)), true);
                }
            return strlen($header);
            }
        );

        $output = curl_exec($ch);

        if ($output === FALSE)
            {
            echo "curl error: " . curl_error($ch);
            }

        curl_close($ch);
        fclose($out_fp);

        return($metadata);
    } 
    

Now issue is path. 

 

Assuming my folder name is "My Company", what would be the path? I've tried below patterns

 

• foldername/filename
• parent_shared_folder_id/filename
• parent_shared_folder_id/file id
• /
• null

And I keep getting path not found. Has anyone having the same issue?