Installation fails: Invalid argument supplied for foreach()

[Leamsi9]

When running composer require, it hits this error on api.php line 8. Can't install. Don't have this issue with composer require on any other packages I just tested.

In api.php line 8:
                                           
  Invalid argument supplied for foreach()  
                                           

Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

[vyuldashev]

Which version?

[Leamsi9]

I presume v1.0.3. It happens on composer require vyuldashev/laravel-openapi which I presume installs the latest version?

[vyuldashev]

I just tried with a clean installation of Laravel and I see no errors. Do you try to install it to Laravel or Lumen?

[hendrikbl]

I was getting the same error when I first tried installing into my existing Laravel 8 project.

This happens if the config was cached using php artisan config:cache. After that every call to new config values, inlcluding config('openapi.collections') will return null, thus the error.

The solution is simple: Just run php artisan config:clear and installation will run smoothly. At least it did for me.