Lumen-framework: Lumen's artisan complains about duplicate class names

[copyrighthero]

• Lumen Version: 5.5.2
• PHP Version: 7.1.10
• Database Driver & Version: mysql (mariadb 10.2.9)

Description:

When run php artisan the script complains that:

  [ErrorException]
  Cannot declare class Event, because the name is already in use

The log file lumen.log output:

[2017-10-25 03:22:07] lumen.ERROR: ErrorException: Cannot declare class Event, because the name is already in use in /tmp/lumen/vendor/laravel/lumen-framework/src/Application.php:686
Stack trace:
#0 [internal function]: Laravel\Lumen\Application->Laravel\Lumen\Concerns\{closure}(2, 'Cannot declare ...', '/tmp/lumen/vend...', 686, Array)
#1 /tmp/lumen/vendor/laravel/lumen-framework/src/Application.php(686): class_alias('Illuminate\\Supp...', 'Event')
#2 /tmp/lumen/vendor/laravel/lumen-framework/src/Application.php(654): Laravel\Lumen\Application->withAliases(Array)
#3 /tmp/lumen/vendor/laravel/lumen-framework/src/Application.php(793): Laravel\Lumen\Application->withFacades(true)
#4 /tmp/lumen/vendor/laravel/lumen-framework/src/Console/Kernel.php(55): Laravel\Lumen\Application->prepareForConsoleCommand(true)
#5 [internal function]: Laravel\Lumen\Console\Kernel->__construct(Object(Laravel\Lumen\Application))
[TRUNCATED]

Invocation of dd(Event::class) before calling class_alias alias function outputs

string(19) "Laravel\Lumen\Event"

And when commented out 'Illuminate\Support\Facades\Event' => 'Event', on line 670, artissan seemed to be working.

Steps To Reproduce:

run php artisan

[hakuno]

Try

composer dump-autoload

[copyrighthero]

Hello @hakuno,

Thank you for the suggestion, I did try it and it didn't help.

Regards

[hakuno]

@copyrighthero

Really I don't know... But, can you create an empty Lumen project with no problem?

[copyrighthero]

Hello @hakuno,

Thank you for your reply, it seemed that I can create empty lumen under windows machine and am able to use artisan. This problem only happens to me when I create one under linux machine, perhaps it was because my php setup?

Thank you for your help :-) I'll just develop under windows and then upload to the server.

Regards,
Hansheng

[AlexanderGur]

I have the same problem on Linux machine, because installed php70-event.
Try commented line in file ext-event.ini

[copyrighthero]

@AlexanderGur !!! Thank you so very much!! Your solution works! I have absolutely zero idea how and why I installed that plugin...

[hakuno]

@AlexanderGur

Interesting... @GrahamCampbell , @themsaid , @taylorotwell

[vladayson]

Rename class App\Events\Event to App\Events\BaseEvent and change the children Event classes.
It works for me

[tdgroot]

You can fix it by adding the following to bootstrap/app.php:

$app->withFacades(true, [
 'Illuminate\Support\Facades\Event' => 'LumenEvent',
]);