When I am trying to upload pictures from a remote address, I am getting errors. More specifically, I am trying to merge pages and when I copy the image address and enter that, it is

Warning: file_get_contents(https://imcdb.org/i002123302.jpg?u=1786814326): Failed to open stream: HTTP request failed! HTTP/1.1 403 Forbidden in /var/www/imcdb/upload-utils.php on line 228

I'm can save the pic to my computer and then upload it. That works.