Laravel 5.4 Implements interface MaddHatter\LaravelFullcalendar\Calendar Error - php

Question

Hello I have a problem with MaddHatter\LaravelFullcalendar\Calendar. I already try to look documentation and search in other question in stackoverflow but still didn't find the solution.
This is my eror :
Type error: Argument 1 passed to
MaddHatter\LaravelFullcalendar\Calendar::addEvent() must implement
interface MaddHatter\LaravelFullcalendar\Event, array given, called in
D:\XAMPP\htdocs\isei\vendor\laravel\framework\src\Illuminate\Support\Facades\Facade.php
on line 221
EventController :
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\EventModel;
use App\Branch;
use Calendar;
use MaddHatter\LaravelFullcalendar\Event;
class EventController extends Controller
{
public function getIndex()
{
$event = [];
$data = EventModel::all();
if($data->count())
{
foreach ($data as $key => $value)
{
$event[] = Calendar::event(
$value->title,
true,
new \DateTime($value->start_date),
new \DateTime($value->end_date.' +1 day')
);
}
}
$calendar = \Calendar::addEvent($event);
return view('event', compact('calendar'));
}
}
Event Model :
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class EventModel extends Model implements \MaddHatter\LaravelFullcalendar\IdentifiableEvent
{
protected $table = 'event';
protected $fillable = [
'id_branch','title','start_date','end_date'
];
public function cabang()
{
return $this->hasOne('App\Branch', 'id', 'id_branch');
}
protected $dates = ['start', 'end'];
/**
* Get the event's id number
*
* #return int
*/
public function getId()
{
return $this->id;
}
/**
* Get the event's title
*
* #return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Is it an all day event?
*
* #return bool
*/
public function isAllDay()
{
return (bool)$this->all_day;
}
/**
* Get the start time
*
* #return DateTime
*/
public function getStart()
{
return $this->start;
}
/**
* Get the end time
*
* #return DateTime
*/
public function getEnd()
{
return $this->end;
}
}

Answer 1

try to change:
use MaddHatter\LaravelFullcalendar\Event;
at your EventController to this:
use MaddHatter\LaravelFullcalendar\Facades\Calendar;

Answer 2

add s to addEvent
$calendar = \Calendar::addEvents($event);