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The error “PackageManifest.php line 122: Undefined index: name” is a common error that can show up in many ways. In this blog, we will go through some of the ways you can fix this issue. Read on.
How To Solve The Error “PackageManifest.php line 122: Undefined index: name” for React app after updating to Visual Studio 2019 16.10.0?
When trying to run the composer update command today, you might get the error below.
PackageManifest.php line 122: Undefined index: name
To resolve this issue, you can check the Composer version or PackageManifest.php is match with your program and in order to get the best solutions to fix your problem, see the below part to select the best option for you.
Option 1: Locate and comment on this line.
To begin with, access PackageManifest.php, which can be found at
<Your Project Root>/vendor/laravel/framework/src/Illuminate/Foundation/PackageManifest.php
Now, locate and comment on this line:
$packages = json_decode($this->files->get($path), true);
After the above-mentioned line, include two new lines:
$installed = json_decode($this->files->get($path), true); $packages = $installed['packages'] ?? $installed;
Option 2: Downgrade Composer version
The issue was fixed by simply downgrading the composer version. Version 1.10.1 was the version to use in my case. Using this command, you can downgrade composer.
composer self-update --1
Option 3: This problem was resolved by using the following command.
This problem was fixed with the following command.
composer update laravel/framework
Option 4: Follow our instruction
Follow these steps to resolve the problem:
Firstly, remove compose.
Install dependencies after locking the file.
We hope you enjoyed our article about the error. With this knowledge, we know that you can fix your “PackageManifest.php line 122: Undefined index: name” error quickly by following these steps! If you still have any other questions about fixing this syntax error, please leave a comment below. Thank you for reading!
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