I notice you've shared a string that looks like a domain or code fragment: — but it contains two consecutive dots ( .. ), which is invalid for a standard domain name.
Warning: file_put_contents(): Only 0 of 281 bytes written, possibly out of free disk space in /home/httpd/www/greencbdstore.eu/html/wp-content/plugins/wp-product-feed-manager/includes/user-interface/wppfm-messaging-functions.php on line 121