error
That error usually means there's a misplaced or extra closing parenthesis ) in your PHP code, often right after a function declaration or in an unexpected spot. PHP is telling you:
$DeleteQuery = new WA_MySQLi_Query($);
You're passing just a dollar sign $ as the argument. PHP is expecting a variable name after the dollar sign (like $myconn, $conn, etc.), but instead you gave it an incomplete variable. so replace $ with your msqli connection variable
please attach page or full delete query or record set so th community can try to pin point the problem. Hope this helps