Laravel CLI has stopped working after inserting data into database - php

Question

I am trying to insert data into a database. This actually works but whenever the submit button is clicked and the browser goes to the action page, i get a "CLI has stopped working" error resulting in a shut down of the local php server.
Since i have no clue as to why i am getting this problem. I will provide all the code that possibly could lead to this error.
The form:
<form method="POST" action="store">
{{ csrf_field() }}
<label for="title">Title</label>
<input type="text" id="title" name="title">
<label for="url">URL</label>
<input type="text" id="url" name="url">
<input type="submit">
</form>
The controller:
<?php
namespace App\Http\Controllers;
use App\Article;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
class AddArticle extends Controller
{
...
public function store(Request $request)
{
$article = new Article;
$article->title = $request->title;
$article->url = $request->url;
$article->save();
}
...
The model:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Article extends Model
{
protected $table = "posts";
protected $fillable = [
'title',
'url',
];
}
The web.php route:
Route::post('/store', 'AddArticle#store');
When the browser goes to /store, i get this CLI stopped working error.
Kind regards