Fatal error: Uncaught TypeError: mysqli_real_escape_string(): Argument #1 ($mysql) must be of type mysqli, string given in /home/wy/blogn/lib/DataObject.php:789 Stack trace: #0 /home/wy/blogn/lib/DataObject.php(789): mysqli_real_escape_string() #1 /home/wy/blogn/lib/Utils.php(308): MySqliDataAdapter->EscapeString() #2 /home/wy/blogn/UserEdit.php(43): WebContext::GetRequestVar() #3 {main} thrown in /home/wy/blogn/lib/DataObject.php on line 789