Can not get the authorization code from the redirect URL

I have created a shopify partner account and also created an APP that app has the client id and secret key. Now, I need to implement the shopify oauth system. To do that I am preparing the URL like this:

$shop = '489207-2'; // Some shop name
$client_id = 'my-client-id';
$scope = 'write_products,read_shipping';
$redirect_uri = 'http://localhost:8888/practice/shopify/redirect.php';

$redirect_url = "https://{$shop}.myshopify.com/admin/oauth/authorize?client_id={$client_id}&scope={$scope}&redirect_uri={$redirect_uri}&access_mode=per-user";
echo $redirect_url;

So above code is generating a link and after click on that link I redirect to ths page:

Now why I can not click on the Install app button? Why it is disabled?

That was my code to test the oauth.

But I have tried another way which is from the Test your app section.

when I click on Select store its showing me this page:

Now, when I click on this Tidy Shopping Deelopment link it’s redirect me to this link:

http://localhost:8888/practice/shopify/?hmac=c17c458f95d9237cbbfeff9acdcd99191e0c44eeed5d7424ec3cfe602942afaf&host=dGlkeS1zaG9wcGluZy1kZXZlbG9wbWVudC5teXNob3BpZnkuY29tL2FkbWlu&shop=tidy-shopping-development.myshopify.com&timestamp=1673514817

Here I can’t see the authorization code, why?

Please Help!

Same issue Occurring for me as well. Did you figure out the solution?

Did you ever get this sorted just out of interest?

We are having a similar issue.

Same issue Occurring for me as well. Did you figure out the solution?