Laravel API - Guzzle Error

Hello people,

I tried to follow a tutorial for an application with Laravel. In this app, I need to load datas from an API. I do this in my api.php file

Route::get('/weather', function(){
    $response = Zttp::get('https://api.darksky.net/forecast/mykey/37.8267,-122.4233');

    return $response->json();
});

Then I call it :

methods: {
            fetchData(){
                fetch(`api/weather`)
                    .then(response => response.json())
                    .then(data => {
                        console.log(data)
                    })
            }
        }

Problem is, i got this error :

cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) 

When I looked for this problems I saw lot of solutions there, but they didn't worked for me. So I'm asking if you have an idea about how to handle this error.

Thank you by advance !