TypeError Object
(
    [message:protected] => mysqli_error(): Argument #1 ($mysql) must be of type mysqli, bool given
    [string:Error:private] => 
    [code:protected] => 0
    [file:protected] => /customers/5/9/2/fredericia-skakforening.dk/httpd.www/phpclass/class.db.php
    [line:protected] => 38
    [trace:Error:private] => Array
        (
            [0] => Array
                (
                    [file] => /customers/5/9/2/fredericia-skakforening.dk/httpd.www/phpclass/class.db.php
                    [line] => 38
                    [function] => mysqli_error
                    [args] => Array
                        (
                            [0] => 
                        )

                )

            [1] => Array
                (
                    [file] => /customers/5/9/2/fredericia-skakforening.dk/httpd.www/phpclass/class.db.php
                    [line] => 15
                    [function] => connectDB
                    [class] => DB
                    [type] => ::
                    [args] => Array
                        (
                        )

                )

            [2] => Array
                (
                    [file] => /customers/5/9/2/fredericia-skakforening.dk/httpd.www/IM2019/phpclass/class.turnering.php
                    [line] => 74
                    [function] => signon
                    [class] => DB
                    [type] => ::
                    [args] => Array
                        (
                        )

                )

            [3] => Array
                (
                    [file] => /customers/5/9/2/fredericia-skakforening.dk/httpd.www/IM2019/index.php
                    [line] => 7
                    [function] => __construct
                    [class] => Turnering
                    [type] => ->
                    [args] => Array
                        (
                            [0] => 63
                        )

                )

        )

    [previous:Error:private] => 
)
Uncaught exception: mysqli_error(): Argument #1 ($mysql) must be of type mysqli, bool given