Answers for "In PackageManifest.php line 120:"

In PackageManifest.php line 131: Undefined index: name laravel 7

composer self-update --stable

How to fix undefined index: name in PackageManifest.php line 131 error with Composer

$ composer update

In PackageManifest.php line 122:

Step 1:
Delete compose.lock File

Step 2:
Install dependencies.

composer install