Can't call model method in toSearchableArray array when created via factory - laravel

Question

I am trying to get a model factory to work, the main model Venue the following:
Place which is a hasOne relation
Type which has a belongsTo relation
On top of that, place has a function called full_address, that returns a comma separated string.
The Venue has a toSearchableArray() to send custom data to Algolia, when I run the factory create method I get:
PHP Error: Call to a member function full_address() on null in app/Venue.php on line 57
This is the venue Model
class Venue extends Model
{
use Searchable;
public function toSearchableArray()
{
$type = $this->type()->first();
$place = $this->place()->first();
return [ 'name' => $this->name,
'type' => $type['name'],
'type_id' => $type['id'],
'venue_id' => $this->id,
'background_image' =>$type['background_file_name'],
'full_address' => $place->full_address(),
'slug' => $this->slug_field,
'_geoloc' =>
[ 'lat' => (float)$this->latitude,
'lng' => (float)$this->longitude
]
];
}
public function place()
{
return $this->hasOne('App\Place');
}
public function type()
{
return $this->belongsTo('App\Type');
}
}
And these are the model factories
$factory->define(App\Venue::class, function (Faker\Generator $faker) {
return [
'name' => $faker->name,
'phoneNumber' => $faker->word,
'latitude' => $faker->latitude,
'longitude' => $faker->longitude,
'LatLong' => $faker->word,
'website' => $faker->word,
'type' => $faker->word,
'place_id' => function () {
return factory(App\Place::class)->create()->id;
},
'status' => $faker->word,
'slug_field' => $faker->word,
'type_id' => function () {
return factory(App\Type::class)->create()->id;
},
];
});
$factory->define(App\Place::class, function (Faker\Generator $faker) {
return [
'place_id' => $faker->randomNumber(),
'administrative_area_level_2' => $faker->word,
'administrative_area_level_1' => $faker->word,
'country' => $faker->country,
'postal_town' => $faker->word,
'postal_code_prefix' => $faker->word,
'postal_code' => $faker->word,
'route' => $faker->word,
'locality' => $faker->word,
'premise' => $faker->word,
'street_number' => $faker->word,
'neighborhood' => $faker->word,
'point_of_interest' => $faker->word,
'natural_feature' => $faker->word,
'administrative_area_level_3' => $faker->word,
'postal_code_suffix' => $faker->word,
'sublocality_level_1' => $faker->word,
'subpremise' => $faker->word,
'sublocality_level_5' => $faker->word,
'sublocality_level_4' => $faker->word,
'sublocality_level_2' => $faker->word,
'sublocality_level_3' => $faker->word,
'administrative_area_level_4' => $faker->word,
'colloquial_area' => $faker->word,
'long' => '123',
'lat' => '123',
];
});
$factory->define(App\Type::class, function (Faker\Generator $faker) {
return [
'name' => $faker->name,
'marker_file_name' => $faker->word,
'background_file_name' => $faker->word,
'description' => $faker->word,
'ShortName' => $faker->word,
];
});
what do I need to do in order to get a reference to the place that is associated with the venue.
Thanks