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Deprecated: mysqli_query(): Passing null to parameter #2 ($query) of type string is deprecated in /var/www/html/category/index.php on line 171

Fatal error: Uncaught ValueError: mysqli_query(): Argument #2 ($query) cannot be empty in /var/www/html/category/index.php:171 Stack trace: #0 /var/www/html/category/index.php(171): mysqli_query(Object(mysqli), '') #1 {main} thrown in /var/www/html/category/index.php on line 171