Only User Model is saving with empty Values to database

In Laravel 5.4 when I try to save User model to the database the values are not saved. I've set the fillable property as well.

It was working in Laravel 5.3. This issue is coming after upgrading the application into Laravel 5.4.

Below is a User model.

class User extends BaseModel implements AuthenticatableContract, CanResetPasswordContract, JWTSubject
{
    use SoftDeletes,
        UserAccess,
        UserAttribute,
        UserRelationship,
        Authenticatable,
        CanResetPassword,
        Notifiable;

    /**
     * Database Table
     *
     * @var string
     */
    protected $table = "users";

    /**
     * The attributes that are not mass assignable.
     *
     * @var array
     */
    protected $guarded = ['id'];

    /**
     * Fillable Form Fields
     *
     * @var array
     */
    protected $fillable = [
        'name',
        'first_name',
        'last_name',
        'email',
        'password',
        'status',
        'confirmed',
        'api_user',
        'confirmation_code',
        'account_id',
        'role_id',
        'cw_contact_id',
        'all',
        'all_locations',
        'username',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = ['password', 'remember_token'];

    /**
     * Select HTML Preference
     *
     * @var string
     */
    protected static $selectHTMLFormat = "[email]";

    /**
     * @var array
     */
    protected $dates = ['deleted_at', 'last_login'];
}

Please note the issue is with User Model only.

I'm saving User as below.

// Create User
        $user = $this->model->create([
            'first_name'        => $input['first_name'],
            'last_name'         => $input['last_name'],
            'username'          => $input['username'],
            'email'             => $input['email'],
            'password'          => bcrypt($input['password']),
            'confirmation_code' => md5(uniqid(mt_rand(), true)),
            'confirmed'         => 1,
            'api_user'          => (isset($input['api_user']) ? $input['api_user'] : 0),
            'account_id'        => $input['account_id'],
            'role_id'           => (isset($input['role_id']) ? $input['role_id'] : 0),
            'all'               => (!isset($input['associated-permissions']) || $input['associated-permissions'] == 'all') ? 1 : 0,
            'status'            => (!isset($input['status']) || $input['status'] ? 1 : 0),
            'all_locations'     => $input['all_locations']
        ]);

Then the create method of BaseModel will be called and below is the code of it.

public static function create(array $attributes = Array())
{
    $user = access()->user();

    if($user)
    {
        $attributes['account_id'] = (!isset($attributes['account_id']) ? $user->account->id : $attributes['account_id'] );
    }

    $childClass     = get_called_class();
    $model          = new $childClass;
    $model->runActionLogger(false, 'create');

    return parent::query()->create($attributes);
}

via Viral Solani