Error Class ‘Red_Group’ not found

Firstly, thanks for the plugin.

I created a redirection using the API in the way the documentation said.

If I run my function directly all works fine, but if I call my function from a cron job, the redirection is not created and I found this error on logs files:

[error] - ( 16:44:09 ) - Redirect from https://secretdev.smn/block-cover/ to https://elmundo.es/ not added. - Array
(
    [0] => Error Object
        (
            [message:protected] => Class 'Red_Group' not found
            [string:Error:private] => 
            [code:protected] => 0
            [file:protected] => /var/www/html/wp-content/plugins/redirection/models/redirect/redirect-sanitizer.php
            [line:protected] => 207
            [trace:Error:private] => Array
                (
                    [0] => Array
                        (
                            [file] => /var/www/html/wp-content/plugins/redirection/models/redirect/redirect-sanitizer.php
                            [line] => 114
                            [function] => get_group
                            [class] => Red_Item_Sanitize
                            [type] => ->
                            [args] => Array
                                (
                                    [0] => 1
                                )

                        )

                    [1] => Array
                        (
                            [file] => /var/www/html/wp-content/plugins/redirection/models/redirect/redirect.php
                            [line] => 479
                            [function] => get
                            [class] => Red_Item_Sanitize
                            [type] => ->
                            [args] => Array
                                (
                                    [0] => Array
                                        (
                                            [status] => enabled
                                            [group_id] => 1
                                            [url] => https://secretdev.smn/block-cover/
                                            [match_type] => url
                                            [match_data] => Array
                                                (
                                                    [source] => Array
                                                        (
                                                            [flag_query] => pass
                                                        )

                                                )

                                            [action_type] => url
                                            [action_data] => Array
                                                (
                                                    [url] => https://elmundo.es/
                                                )

                                            [action_code] => 301
                                        )

                                )

                        )

                    [2] => Array
                        (
                            [file] => /var/www/html/wp-content/themes/secretmedianetwork/classes/seo/class-cleanup-old-url-controller.php
                            [line] => 182
                            [function] => create
                            [class] => Red_Item
                            [type] => ::
                            [args] => Array
                                (
                                    [0] => Array
                                        (
                                            [status] => enabled
                                            [group_id] => 1
                                            [url] => https://secretdev.smn/block-cover/
                                            [match_type] => url
                                            [match_data] => Array
                                                (
                                                    [source] => Array
                                                        (
                                                            [flag_query] => pass
                                                        )

                                                )

                                            [action_type] => url
                                            [action_data] => Array
                                                (
                                                    [url] => https://elmundo.es/
                                                )

                                            [action_code] => 301
                                        )

                                )

                        )

                    .......................................................................................

What could be going on? Why class Red_Group is unreachable in this way?

Thanks in advance!