master: HandlesOAuthErrors middleware unable to actually handle errors

[TimWolla]

• Passport Version: dev-master with commit 7959c6c
• Laravel Version: 5.8.30
• PHP Version: 7.3.4 (Debian Buster)
• Database Driver & Version: MySQL 8.0.17

Description:

The new HandlesOAuthErrors middleware is unable to actually handle errors, because Laravel intercepts Exceptions of the final destination of the middleware pipeline:

https://github.com/laravel/framework/blob/9097786caae30e9ca243874e5c807609f1f2728e/src/Illuminate/Pipeline/Pipeline.php#L133

see also my comment in the PR introducing the middleware: #937 (comment)

Steps To Reproduce:

Attempt to use Passport within a Laravel application and open /oauth/authorize with an invalid client_id. You'll see an HTTP 500 instead of a proper JSON response explaining the issue.

[driesvints]

The PR for this was merged into master.

[donmbelembe]

I'm still getting a generic error on passport 8.0