Error connecting to SQLServer

Hi everyone. I am new to CI4 and wanted to upgrade my website to CI4, but I am having trouble connecting to the SQLServer database.
My connection details are these

PHP Code:

public $default = [
        'DSN'      => '',
        'hostname' => 'xxx.xxx.xxx',
        'username' => 'my_user',
        'password' => 'my_pass',
        'database' => 'my_DB',
        'DBDriver' => 'sqlsrv',
        'DBPrefix' => '',
        'pConnect' => false,
        'DBDebug'  => (ENVIRONMENT !== 'production'),
        'cacheOn'  => false,
        'cacheDir' => '',
        'charset'  => 'utf8',
        'DBCollat' => 'utf8_general_ci',
        'swapPre'  => '',
        'encrypt'  => false,
        'compress' => false,
        'strictOn' => false,
        'failover' => [],
        'port'     => 3306,
    ]; 


After testing the connection I get this error:

Error

Class '\CodeIgniter\Database\sqlsrv\Connection' not found
[b]SYSTEMPATH/Database/Database.php at line 85[/b]

Code:

78             throw new \InvalidArgumentException('You have not selected a database type to connect to.');
79         }
80
81         $className = strpos($params['DBDriver'], '\\') === false
82             ? '\CodeIgniter\Database\\' . $params['DBDriver'] . '\\Connection'
83             : $params['DBDriver'] . '\\Connection';
84
85         $class = new $className($params);
86
87         // Store the connection
88         $this->connections[$alias] = $class;
89
90         return $this->connections[$alias];
91     }
92

I have tested the connection with php and it connects correctly

PHP Code:

<?php
    $serverName = "xxx.xxx.xxx";
    $connectionOptions = array(
        "Database" => "my_DB",
        "Uid" => "my_user",
        "PWD" => "my_pass"
    );
    //Establishes the connection
    $conn = sqlsrv_connect($serverName, $connectionOptions);
    if($conn)
        echo "Connected!"
?>

please. Can you help me?

Thank you so much everyone!

I don't believe CI4 supports SQLServer yet - so far there's only MySQLi, Postgre, and SQLite3 from what I see in the code.