Eloquent model ignoring casts

Hi all,

I've two Laravel sites, one public facing and one internal (intranet). They share a database for one particular service aspect, one-time secret sharing. The intranet creates data entries that are later retrieved on public facing site (this will later be replaced with an API).

The models I have on both sites are almost identical (difference being on the public site there are no fillable columns).

The casts are exactly identical.

On the Intranet site the casts work as expected and when I perform a dump on the retrieved model I see this.

#casts: array:2 [▼
    "secret" => "App\Casts\SecretEncrypt"
    "passphrase" => "App\Casts\SecretEncrypt"
  ]

However on the public site, it's completely ignoring the casts.

#casts: []

This is my model

<?php

namespace App\Models;

use Illuminate\Support\Str;
use App\Casts\SecretEncrypt;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Factories\HasFactory;

class Secrets extends Model
{
    use HasFactory;

    protected $keyType = 'string';

    protected function casts(): array
    {
        return [
            'secret' => SecretEncrypt::class,
            'passphrase' => SecretEncrypt::class,
        ];
    }
}

And this is my cast

<?php

namespace App\Casts;

use Illuminate\Encryption\Encrypter;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Contracts\Database\Eloquent\CastsAttributes;

class SecretEncrypt implements CastsAttributes
{
    /**
     * Cast the given value.
     *
     * @param  array<string, mixed>  $attributes
     */
    public function get(Model $model, string $key, mixed $value, array $attributes): mixed
    {
        return $this->customDecrypt($value);
    }

    /**
     * Prepare the given value for storage.
     *
     * @param  array<string, mixed>  $attributes
     */
    public function set(Model $model, string $key, mixed $value, array $attributes): mixed
    {
        return $this->customEncrypt($value);
    }

    private function customEncrypt($data) {
        $key = base64_decode(config('app.key'));
        $encrypter = new Encrypter($key, config('app.cipher')); // Cipher: AES-256-CBC by default
        return $encrypter->encrypt($data);
    }

    private function customDecrypt($data) {
        $key = base64_decode(config('app.key'));
        $encrypter = new Encrypter($key, config('app.cipher'));
        return $encrypter->decrypt($data);
    }
}

There is no attempt by Eloquent to perform the get() method, the data is outputted exactly as stored in the DB.

Any ideas?

I've ran artisan cache:clear and config:cache but it's made no difference, also ran composer dump-autoload in case it was a autoload issue and stopped/started artisan serve