Fatal error: Uncaught mysqli_sql_exception: Duplicate entry 'Einstein' for key 'mem_id' in /users/2021/i2151012/public_html/WebDB/06/insert.php:103 Stack trace: #0 /users/2021/i2151012/public_html/WebDB/06/insert.php(103): mysqli_multi_query() #1 {main} thrown in /users/2021/i2151012/public_html/WebDB/06/insert.php on line 103