5.7.16: Unresolvable dependency

[m-lotze]

• Laravel Version: 5.7.16
• PHP Version: 7.2

Description:

I have a project that produces this error after upgrading to 5.7.16 with composer update:

Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover

In Container.php line 960:

  Unresolvable dependency resolving [Parameter #0 [ <required> $app ]] in class Illuminate\Support\Manager


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

When i downgrade to 5.7.15 everything works. What could that be?

It seems to be only that project. Others work on 5.7.16.

[driesvints]

Can you first please try one of the following support channels? If you can actually identify this as a bug, feel free to report back.

• Laracasts Forums
• Laravel.io Forums
• Discord
• Larachat
• IRC
• StackOverflow

[mvanduijker]

I have the same problem with one of my projects...

[driesvints]

I just managed to update a project this way. This is probably related to something specific for your project. Perhaps an external package you use?

[m-lotze]

Found the problem:

I was missing Illuminate\Notifications\NotificationServiceProvider::class, in my app.php config file. Problaby because this project is quite old and in earlier versions this provider was not required there or i removed it.

[driesvints]

@m-lotze it was: https://laravel.com/docs/5.3/upgrade

[m-lotze]

Yep, saw that now. Edited my comment.

[devcircus]

Changes to laravel/laravel between versions, are documented in the upgrade guides.

[mvanduijker]

@m-lotze awesome! that fixed it for me!

[stevebauman]

This may be common knowledge but just in case someone runs into the same issue I had, you may need to delete your cached config manually after updating in app/bootstrap/cache/config.php as artisan broke when I didn't previously have the NotificationServiceProvider in my config/app.php.

[nowox]

I had the exact same issue:

Unresolvable dependency resolving [Parameter #0 [ <required> $app ]] in class Illuminate\Support\Manager

I solved it just by changing the method prototype from this:

public function __construct($app)
{
    $this->app = $app;
}

to this:

public function __construct(\Illuminate\Foundation\Application $app)
{
    $this->app = $app;
}

But in fact the origin was that I was missing the following provider:

Illuminate\Notifications\NotificationServiceProvider::class

What remains mysterious to me is why my kludge was perfectly working and why do I need the NotificationServiceProvider if I am not using it?

[felixwetell]

Have had this issue a couple of times with different classes missing. This usually is solved by updating composer.

Run in the project folder:
composer update

[naingminkhant]

Please Check your config/app.php

[rtconner]

I had to delete my bootstrap/cache/* files to get past this error

[arukompas]

Happened to me as well. Worked just fine for everyone on the team, but one member came across this issue. In the end we blamed the local git repository being corrupted.

We set up (cloned) the repo from scratch and then it was working just fine.

Just something to try for anyone to whom other solutions didn't work.

[hamza-gaya]

Can you first please try one of the following support channels? If you can actually identify this as a bug, feel free to report back.

• Laracasts Forums
• Laravel.io Forums
• Discord
• Larachat
• IRC
• StackOverflow

dalal admi agar batana hai to batao nahi to warna chup raho

[hamza-gaya]

I had the exact same issue:

Unresolvable dependency resolving [Parameter #0 [ <required> $app ]] in class Illuminate\Support\Manager

I solved it just by changing the method prototype from this:

public function __construct($app)
{
    $this->app = $app;
}

to this:

public function __construct(\Illuminate\Foundation\Application $app)
{
    $this->app = $app;
}

But in fact the origin was that I was missing the following provider:

Illuminate\Notifications\NotificationServiceProvider::class

What remains mysterious to me is why my kludge was perfectly working and why do I need the NotificationServiceProvider if I am not using it?

This is the perfect solution for this problems thanks for resolving it means a lot