Localhost bloqué

Bonjour,après avoir installé Mamp 4.2 sur windows 10 je n'arrive pas à accéder à "My Website" c'est la page d'accueil de 'Mamp pro'  qui  s'affiche  idem avec les navigateurs Google et Firefox avec la commande localhost.dans le fichier logs de Mamp voici ce qui apparait:

26-Sep-2022 09:21:22 UTC] PHP Warning:  mysqli_query() expects parameter 1 to be mysqli, boolean given in C:\Users\echec\AppData\Roaming\Appsolute\MAMP\pscripts\file-771e4ae1-50e1-46d6-bb10-d8b4ab7b1130.php on line 12
[26-Sep-2022 09:21:22 UTC] PHP Warning:  mysqli_query() expects parameter 1 to be mysqli, boolean given in C:\Users\echec\AppData\Roaming\Appsolute\MAMP\pscripts\file-771e4ae1-50e1-46d6-bb10-d8b4ab7b1130.php on line 13
[26-Sep-2022 09:21:22 UTC] PHP Warning:  mysqli_fetch_assoc() expects parameter 1 to be mysqli_result, null given in C:\Users\echec\AppData\Roaming\Appsolute\MAMP\pscripts\file-771e4ae1-50e1-46d6-bb10-d8b4ab7b1130.php on line 16
[26-Sep-2022 09:21:22 UTC] PHP Warning:  mysqli_close() expects parameter 1 to be mysqli, boolean given in C:\Users\echec\AppData\Roaming\Appsolute\MAMP\pscripts\file-771e4ae1-50e1-46d6-bb10-d8b4ab7b1130.php on line 21
et voici le code php

<?php $con=mysqli_connect("localhost","root","root", "mysql", 3306);

if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }



$sth = mysqli_query($con,"UPDATE mysql.user SET authentication_string = PASSWORD('root'), password_expired = 'N' WHERE User = 'root' AND Host = 'localhost';");
mysqli_query($con,"FLUSH PRIVILEGES;");
$rows = array();

while($r = mysqli_fetch_assoc($sth)) {
    $rows[] = $r;
}
print json_encode($rows);

mysqli_close($con);
?>

voulez-vous s'il vous plait m'indiquer comment corriger ces erreurs merci beaucoup d'avance
Windows / Chrome 105.0.0.0