vanzon.dev-tmo.nl has encountered an error.

Type: E_WARNING
Time: 1573869361
File: /var/www/vhosts/vanzon.dev-tmo.nl/httpdocs/common/database_engine.php
Line: 376
Message: mysql_num_rows() expects parameter 1 to be resource, boolean given

Backtrace:
Array
(
    [0] => Array
        (
            [function] => error_report
            [args] => Array
                (
                    [0] => 2
                    [1] => mysql_num_rows() expects parameter 1 to be resource, boolean given
                    [2] => /var/www/vhosts/vanzon.dev-tmo.nl/httpdocs/common/database_engine.php
                    [3] => 376
                    [4] => Array
                        (
                            [table] => _language
                            [fields] => 
                            [values] => 
                            [return_rows] => 1
                            [sort_clause] => 
                            [isNot] => 
                            [queryReturn] => 
                            [pairs] => Array
                                (
                                )

                            [query] => SELECT * FROM `_language`
                            [result] => 
                        )

                )

        )

    [1] => Array
        (
            [file] => /var/www/vhosts/vanzon.dev-tmo.nl/httpdocs/common/database_engine.php
            [line] => 376
            [function] => mysql_num_rows
            [args] => Array
                (
                    [0] => 
                )

        )

    [2] => Array
        (
            [file] => /var/www/vhosts/vanzon.dev-tmo.nl/httpdocs/modules/pages/pages_oud.php
            [line] => 17
            [function] => db_select_row_crits
            [args] => Array
                (
                    [0] => _language
                    [1] => 
                    [2] => 
                    [3] => 1
                )

        )

    [3] => Array
        (
            [file] => /var/www/vhosts/vanzon.dev-tmo.nl/httpdocs/common/rewrite_engine.php
            [line] => 16
            [function] => pages_main
            [args] => Array
                (
                )

        )

    [4] => Array
        (
            [file] => /var/www/vhosts/vanzon.dev-tmo.nl/httpdocs/index.php
            [line] => 26
            [function] => engine_init
            [args] => Array
                (
                )

        )

)