Laravel Composer Error: Installation failed, reverting ./composer.json to its original content

Question

I'm actually new to Laravel and I'm working with Laravel 5.8 to develop my project.

Basically I wanted to check the file ExampleComponent.vue at resources/js/components directory but it wasn't there so as this link says, I have to run composer require laravel/ui command and after that, php artisan ui vue command, then npm install && npm run dev.

But I typed the first command which is composer require laravel/ui and it suddenly said:

Your requirements could not be resolved to an installable set of packages.

Problem 1
    - Conclusion: remove laravel/framework v5.8.38
    - Conclusion: don't install laravel/framework v5.8.38
    - laravel/ui 2.x-dev requires illuminate/support ^7.0|^8.0 -> satisfiable by illuminate/support[7.x-dev, 8.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - laravel/ui v2.2.0 requires illuminate/support ^7.0|^8.0 -> satisfiable by illuminate/support[7.x-dev, 8.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - don't install illuminate/support 7.x-dev|don't install laravel/framework v5.8.38
    - don't install illuminate/support 8.x-dev|don't install laravel/framework v5.8.38
    - don't install illuminate/support 8.x-dev|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.3|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.4|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.5|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.6|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.7|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.0.8|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.1.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.1.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.1.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.1.3|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.3|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.11.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.12.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.13.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.14.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.14.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.15.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.16.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.16.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.17.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.17.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.17.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.18.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.19.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.19.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.2.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.2.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.2.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.20.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.21.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.22.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.22.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.22.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.22.3|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.22.4|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.23.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.23.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.23.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.24.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.25.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.26.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.26.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.27.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.3.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.4.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.5.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.5.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.5.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.6.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.6.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.6.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.7.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.7.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.8.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.8.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.9.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.9.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.9.2|don't install laravel/framework v5.8.38
    - Installation request for laravel/framework (locked at v5.8.38, required as 5.8.*) -> satisfiable by laravel/framework[v5.8.38].
    - Installation request for laravel/ui ^2.2 -> satisfiable by laravel/ui[2.x-dev, v2.2.0].


Installation failed, reverting ./composer.json to its original content.

So I don't know what to do now, would you please help me out with this?

I would really appreciate any idea or suggestion...

Thanks in advance.

Answer 1

If you are using Laravel 6 run the commands:

composer require laravel/ui "2.x"

php artisan ui vue --auth

npm install && npm run dev

Answer 2

You installed laravel/ui version 3.0 which corresponds laravel 8.x. you should install ui 2.x version with this command:

composer require laravel/ui:2.x

Answer 3

Your problem is with your laravel version, which is old for latest laravel/ui Project.

Try with a fresh project:

composer create-project --prefer-dist laravel/laravel blog For new project, replace your project name with blog, then try composer require laravel/ui to add vue/react/angular scaffolds.

Also I'm suggesting to do a new project since you said you're new to laravel and you should keep your project and libraries up to date.

Full Laravel Installation Documents Here

Edit:

If you don't want to create a new project you can simply, edit your composer.json in project and change these lines to the latest versions or just replace parts with below:

"require": {
    "php": "^7.2.5",
    "fideloper/proxy": "^4.2",
    "laravel/framework": "^7.24",
    "laravel/tinker": "^2.0",
 }

Then simply run Composer update, ofc there are some big changes to take care since you're using 5.* but this is where you should start to just simply include new ui library to project.

Good Luck

Answer 4

Your problem is explained by the following two lines:

- laravel/ui 2.x-dev requires illuminate/support ^7.0|^8.0 -> satisfiable by illuminate/support[7.x-dev, 8.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
- laravel/ui v2.2.0 requires illuminate/support ^7.0|^8.0 -> satisfiable by illuminate/support[7.x-dev, 8.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].

To install laravel/ui 2.x, you need to have illuminate/support 7.x or 8.x, which corresponds to laravel/framework 7.x or 8.x.

To make it work with your version of laravel (5.8), you need to find a version of that library that does work with that version of laravel. If you go to packagist, you can browse all versions of laravel/ui, and it turns out that 1.2.0 does support laravel 5.8. You can thus solve your problem by installing an earlier version composer require laravel/ui:1.2.0. Note that this version might or might not contain the functionality you seek though. If you have the option of upgrading laravel instead, that is probably the better option.