[11.x] Add class_exists check for Spark's subscribed default alias Middleware

[akr4m]

Fix ReflectionException for Missing Spark Middleware in Laravel

This PR addresses an issue where Laravel was attempting to load the Spark\Http\Middleware\VerifyBillableIsSubscribed middleware, which does not exist by default in Laravel 11. The alias subscribed was mistakenly added to the default middleware aliases in Middleware.php, leading to a ReflectionException when the framework tried to resolve it.

When Laravel attempts to utilize the subscribed middleware, it triggers a ReflectionException because the Spark\Http\Middleware\VerifyBillableIsSubscribed class does not exist. This error disrupts the functionality of applications running on Laravel 11 that rely on the default middleware stack.

The PR removes the subscribed alias from the defaultAliases() method in Middleware.php, preventing Laravel from attempting to load a non-existent middleware class. This change ensures that the application can run without encountering a fatal error due to the missing class.

[nunomaduro]

Can you share the exact error you faced in your application? A screenshot of the browser or console?

[akr4m]

Can you share the exact error you faced in your application? A screenshot of the browser or console?

[taylorotwell]

I believe this may be from your static analysis tool or something. How can I recreate this error in a fresh L11 installation?

[taylorotwell]

Regardless, it shouldn't be removed. A class_exists check can be added.

[akr4m]

Thank you.
In addition I'm using Laravel IDE Helper.
As it was installed I was noticed that error log

[akr4m]

Regardless, it shouldn't be removed. A class_exists check can be added.

Should I add class_exists check?

[taylorotwell]

Sure.