Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in C:\xampp\htdocs\php-signup-login-main\login.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\php-signup-login-main\login.php on line 15

[Ebab12]

https://github.com/daveh/php-signup-login/blob/f0596513659e5592bdfd722a33c0fbc07eebe9fd/login.php#L15

[daveh]

If that's the error message, then it's probably the database connection credentials that are incorrect (username, password etc.) check these are correct and that it's connecting to the database correctly