Class 'Illuminate\Support\Arr' not found

[yooouuri]

• Lumen Version: 5.5.*
• PHP Version: PHP 7.1.9-1+ubuntu16.04.1+deb.sury.org+1 (cli) (built: Sep 2 2017 05:56:43) ( NTS )
• Database Driver & Version: -

Description:

I am trying to create a new lumen project.

After running php artisan key:generate the following error occour

[Symfony\Component\Debug\Exception\FatalThrowableError]  
  Class 'Illuminate\Support\Arr' not found

Steps To Reproduce:

lumen new <name>
cd <name>
composer install
cp .env.example .env
php artisan key:generate

[ludo237]

Key generate is not part of lumen default commands, where did you get that?

[yooouuri]

@ludo237

Like laravel, I thought i should generate a key.

When i go to the url of my Lumen website, i got the same Class 'Illuminate\Support\Arr' not found error...

[ludo237]

You have to generate that, but in other ways, anyway..

It's hard to determine the cause of the problem. I tryed the steps above with a fresh lumen installation and I do have the Arr.php in vendor\illuminate\support

Have you reference that correctly? Try dumping the composer autoload first

[martendej]

I seem to be having the same issue. Ran composer install on a fresh lumen installation, keep getting the 'Illuminate\Support\Arr not found' error. When I dig further in the vendor folder, the Arr.php indeed does not exist. Tried composer dumpautoload, composer clearcache and reinstall, no success. The Arr.php file is just gone.. Any ideas anyone?

[martendej]

Ok, I did some research and it seems that some files are not being created when running composer install (I'm using version 5.0.1, Vagrant 1.8.5 & VirtualBox Guest Additions 5.1.12 with MacOS High Sierra 10.13.1) with the 'NFS' flag in the Homestead.yaml file. After commenting the NFS option and reloading homestead and rerunning composer install all files are created as they should and the project works again. Does anyone know why this is happening? @GrahamCampbell or @taylorotwell maybe?

[martendej]

Ok, it seems to be an issue with MacOS High Sierra and the NFS option. Apple fixed it in High Sierra 10.13.2 (beta). This issue covers it and should clarify some things. I will try updating and I hope the problem is resolved after.