Fatal error: Uncaught mysqli_sql_exception: Duplicate entry '1' for key 'PRIMARY' in /users/2020/i2019017/public_html/WebDB/mySubject/memberDAO.php:51 Stack trace: #0 /users/2020/i2019017/public_html/WebDB/mySubject/memberDAO.php(51): mysqli->query() #1 /users/2020/i2019017/public_html/WebDB/mySubject/index.php(105): memberDAO->insertRow() #2 {main} thrown in /users/2020/i2019017/public_html/WebDB/mySubject/memberDAO.php on line 51