suggest is not working

[fuess]

Hi! I have two Eloquent models Eventdate and Event:

class EventDate {

    use SearchableTrait;

    public static $__es_config = [
        'suggest'       => ['event.name', 'event.excerpt', 'event.description']
    ];


    public function event()
    {
        return $this->belongsTo(Event::class);
    }


class Event {
    use CallableTrait;

    public function dates()
    {
        return $this->hasMany(EventDate::class);
    }

I run the index process with:
php artisan larasearch:paths --relations --write-config Namespace\EventDate
php artisan larasearch:reindex --relations Namespace\EventDate

The index is created and I can succesfully do simple (exact match) searches. But I can't get suggestions to work, although I have them set up in the $__es_config property.

The response always gives me an empty options array:

{
    "_shards": {
        "total": 1,
        "successful": 1,
        "failed": 0
    },
    "my-suggestion": [{
        "text": "search_term_with_typo",
        "offset": 0,
        "length": 16,
        "options": []
    }]
}

I use the elasticsearch/elasticsearch package to query the index:

$getMappingParams['index'] = 'event_dates_20150804140349';
$client->indices()->getMapping($getMappingParams);

This gives me a huge array, but the (maybe) relevant parts looks like this:

[event_dates_20150804140349] => Array
    [mappings] => Array
        [_default_]  => Array

            ...dynamic templates...

            [properties] => Array
                (
                    [event] => Array
                        (
                            [properties] => Array
                                (
                                    [description] => Array
                                        (
                                            [type] => string
                                            [index] => not_analyzed
                                            [fields] => Array
                                                (
                                                    [analyzed] => Array
                                                        (
                                                            [type] => string
                                                        )

                                                    [suggest] => Array
                                                        (
                                                            [type] => string
                                                            [analyzer] => larasearch_suggest_index
                                                        )

                                                )

                                        )
                                )
                        )
                )


        [event_date] => Array
            (
                [properties] => Array
                    (
                        [event] => Array
                            (
                                [properties] => Array
                                    (
                                        [description] => Array
                                            (
                                                [type] => string
                                                [index] => not_analyzed
                                                [fields] => Array
                                                    (
                                                        [analyzed] => Array
                                                            (
                                                                [type] => string
                                                             )
                                                        [suggest] => Array
                                                        (
                                                            [type] => string
                                                            [analyzer] => larasearch_suggest_index
                                                         )
                                                    )
                                            )
                                    )
                            )
                    )
            )
    )
)

In the bottom part you can see that [index] is not_analyzed. Shouldn't that be analyzed? Although the [fields] do have an analyzed array and suggest array. Don't know if I'm searching in the right direction? Is the mapping incorrect?

Can someone help with this? Thanks!