Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/abp/www/article.php on line 13

Fatal error: Uncaught TypeError: fetch_full_article(): Argument #1 ($article_id) must be of type int, null given, called in /var/www/html/abp/www/article.php on line 14 and defined in /var/www/html/abp/www/magic.php:45 Stack trace: #0 /var/www/html/abp/www/article.php(14): fetch_full_article() #1 {main} thrown in /var/www/html/abp/www/magic.php on line 45