wnevents.nl has encountered an error.

Array
(
    [0] => Array
        (
            [function] => error_report
            [args] => Array
                (
                    [0] => 2
                    [1] => in_array() [function.in-array]: Wrong datatype for second argument
                    [2] => /var/www/vhosts/wnevents.nl/httpdocs/common/rewrite_engine.php
                    [3] => 80
                    [4] => Array
                        (
                            [argc] => 3
                            [argv] => Array
                                (
                                    [0] => index.php
                                    [1] => events
                                    [2] => vlaardingen-festival
                                )

                            [special_args] => 
                        )

                )

        )

    [1] => Array
        (
            [file] => /var/www/vhosts/wnevents.nl/httpdocs/common/rewrite_engine.php
            [line] => 80
            [function] => in_array
            [args] => Array
                (
                    [0] => events
                    [1] => 
                )

        )

    [2] => Array
        (
            [file] => /var/www/vhosts/wnevents.nl/httpdocs/common/rewrite_engine.php
            [line] => 13
            [function] => parse_function
            [args] => Array
                (
                )

        )

    [3] => Array
        (
            [file] => /var/www/vhosts/wnevents.nl/httpdocs/index.php
            [line] => 45
            [function] => engine_init
            [args] => Array
                (
                )

        )

)