Warning: Undefined array key "id" in G:\PleskVhosts\madurai-biz.com\wur\universityrank.php on line 8

Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 in G:\PleskVhosts\madurai-biz.com\wur\classes\db.php:70 Stack trace: #0 G:\PleskVhosts\madurai-biz.com\wur\classes\db.php(70): mysqli_query() #1 G:\PleskVhosts\madurai-biz.com\wur\classes\wur.php(36): db->query() #2 G:\PleskVhosts\madurai-biz.com\wur\universityrank.php(8): wur->universitybyid() #3 {main} thrown in G:\PleskVhosts\madurai-biz.com\wur\classes\db.php on line 70