Guzzlehttp Error While Upgrading Laravel to 8 from 7

Change your composer.json to this

"guzzlehttp/guzzle": "^6.5|^7.0.1",

Laravel 8 doesn't really require Guzzle 7, so it's fine to keep using Guzzle 6 also.

You can see some discussion about this here: https://github.com/laravel/laravel/pull/5381

Hello Ishra,

Thanks for the attention, I've updated composer however now I'm getting another error:

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

  Problem 1
    - Conclusion: don't install laravel/framework v8.2.0
    - Conclusion: don't install laravel/framework v8.1.0
    - Conclusion: don't install laravel/framework v8.0.4
    - Conclusion: don't install laravel/framework v8.0.3
    - Conclusion: don't install laravel/framework v8.0.2
    - Conclusion: don't install laravel/framework v8.0.1
    - Conclusion: don't install laravel/framework v8.0.0

....
- Installation request for laravel/framework ^8.0 -> satisfiable by laravel/framework[8.x-dev, v8.0.0, v8.0.1, v8.0.2, v8.0.3, v8.0.4, v8.1.0, v8.2.0].
    - Installation request for sentry/sentry-laravel 1.8.0 -> satisfiable by sentry/sentry-laravel[1.8.0].

My Composer.json

"require": {
        "php": "^7.3",
        "fideloper/proxy": "^4.2",
        "fruitcake/laravel-cors": "^1.0",
        "guzzlehttp/guzzle": "^6.5|^7.0.1",
        "jailtonsc/validador-cpf-laravel": "^5.0",
        "laravel/framework": "^8.0",
        "laravel/legacy-factories": "^1.0",
        "laravel/telescope": "^3.5",
        "laravel/tinker": "^2.0",
        "laravel/ui": "^3.0",
        "league/flysystem-aws-s3-v3": "^1.0",
        "php-http/guzzle6-adapter": "^2.0",
        "rap2hpoutre/laravel-log-viewer": "^1.6",
        "sentry/sentry-laravel": "1.8.0",
        "spatie/image-optimizer": "^1.2",
        "spatie/laravel-backup": "^6.11",
        "spatie/laravel-permission": "^3.13",
        "yajra/laravel-datatables-oracle": "~9.0"
    },
    "require-dev": {
        "facade/ignition": "^2.3.6",
        "fzaninotto/faker": "^1.9.1",
        "mockery/mockery": "^1.3.1",
        "nunomaduro/collision": "^5",
        "phpunit/phpunit": "^9"
    },

you have configured to only allow exactly 1.8.0 of sentry. Change it to ”sentry/sentry-laravel": "^1.9.0" and it should work.

https://github.com/getsentry/sentry-laravel#laravel-version-compatibility

If you would have had the constraint to ”^1.8.0” it would have worked without change.

Here you can read about composer version constraints: https://getcomposer.org/doc/articles/versions.md#caret-version-range-

Hello Ishra

I tried to install that sentry version however I got that error:

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

  Problem 1
    - The requested package laravel/framework (locked at v7.28.1, required as ^8.0) is satisfiable by laravel/framework[v7.28.1] but these conflict with your requirements or minimum-stability.
  Problem 2
    - The requested package laravel/ui (locked at v2.4.0, required as ^3.0) is satisfiable by laravel/ui[v2.4.0] but these conflict with your requirements or minimum-stability.
  Problem 3
    - The requested package nunomaduro/collision (locked at v4.2.0, required as ^5) is satisfiable by nunomaduro/collision[v4.2.0] but these conflict with your requirements or minimum-stability.
  Problem 4
    - The requested package phpunit/phpunit (locked at 8.5.8, required as ^9) is satisfiable by phpunit/phpunit[8.5.8] but these conflict with your requirements or minimum-stability.
  Problem 5
    - Conclusion: don't install laravel/framework v8.3.0
    - Conclusion: don't install laravel/framework v8.0.4
    - Conclusion: don't install laravel/framework v8.0.3
    - Conclusion: don't install laravel/framework v8.0.2
    - Installation request for laravel/telescope (locked at v3.5.1, required as ^3.5) -> satisfiable by laravel/telescope[v3.5.1].
    - Conclusion: don't install laravel/framework v8.0.1
    - Conclusion: don't install laravel/framework v8.0.0
    - don't install illuminate/macroable v8.2.0|don't install laravel/framework 8.x-dev
    - don't install laravel/framework 8.x-dev|remove illuminate/macroable v8.2.0
    - don't install laravel/framework 8.x-dev|don't install illuminate/macroable v8.2.0
    - Installation request for laravel/framework ^8.0 -> satisfiable by laravel/framework[8.x-dev, v8.0.0, v8.0.1, v8.0.2, v8.0.3, v8.0.4, v8.1.0, v8.2.0, v8.3.0].
    - Installation request for illuminate/macroable (locked at v8.2.0) -> satisfiable by illuminate/macroable[v8.2.0], laravel/framework[v8.2.0].

Laravel Telescope version 3 is not compatible with Laravel 8.

Update this in your composer.json:

"laravel/telescope": "^4.0",

For any further dependencies errors you can visit the package repository and check if it already supports Laravel 8, and if so, check if you are requesting the correct version.

By the way, the Laravel Telescope version upgrade is noted on the upgrade guide:

https://laravel.com/docs/8.x/upgrade#updating-dependencies

(look at the second list)

Thanks for the attention I fixed the issue