Problem with css-selector during install.

[ebezdomnikov]

/composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for laracasts/integrated ^0.15.6 -> satisfiable by laracasts/integrated[0.15.6].
- Conclusion: remove symfony/css-selector v3.0.4
- Conclusion: don't install symfony/css-selector v3.0.4
- laracasts/integrated 0.15.6 requires symfony/css-selector ~2.5|~2.6 -> satisfiable by symfony/css-selector[v2.8.0, v2.8.1, v2.8.2, v2.8.3, v2.8.4].
- Can only install one of: symfony/css-selector[v2.8.0, v3.0.4].
- Can only install one of: symfony/css-selector[v2.8.1, v3.0.4].
- Can only install one of: symfony/css-selector[v2.8.2, v3.0.4].
- Can only install one of: symfony/css-selector[v2.8.3, v3.0.4].
- Can only install one of: symfony/css-selector[v2.8.4, v3.0.4].
- Installation request for symfony/css-selector == 3.0.4.0 -> satisfiable by symfony/css-selector[v3.0.4].

[mr-Sepi0l]

Same error, any solution ?

[edericogrocha]

1. Go to your composer.json
2. Remove both lines in require-dev where you have symfony/css-selector and symfony/dom-crawler
3. Do composer update
4. Do composer require laracasts/integrated --dev

Worked like a charm to me.

@edericogrocha Doesn't seem to work anymore (or rather, the relevant lines aren't there?).
I don't have any mention of symfony/dom-crawler anywhere in the laravel app.

Here's what vendor/symfony/css-selector/composer.json looks like (laravel 5.5)

`{

"name": "symfony/css-selector",
"type": "library",
"description": "Symfony CssSelector Component",
"keywords": [],
"homepage": "https://symfony.com",
"license": "MIT",
"authors": [
    {
        "name": "Fabien Potencier",
        "email": "fabien@symfony.com"
    },
    {
        "name": "Jean-François Simon",
        "email": "jeanfrancois.simon@sensiolabs.com"
    },
    {
        "name": "Symfony Community",
        "homepage": "https://symfony.com/contributors"
    }
],
"require": {
    "php": "^5.5.9|>=7.0.8"
},
"autoload": {
    "psr-4": { "Symfony\\Component\\CssSelector\\": "" },
    "exclude-from-classmap": [
        "/Tests/"
    ]
},
"minimum-stability": "dev",
"extra": {
    "branch-alias": {
        "dev-master": "3.3-dev"
    }
}

}`

[Tochine]

Please how do I resolve this error?

Problem 1
- symfony/css-selector v4.0.4 requires php ^7.1.3 -> your PHP version (7.1.2) does not satisfy that requirement.
- symfony/css-selector v4.0.4 requires php ^7.1.3 -> your PHP version (7.1.2) does not satisfy that requirement.
- symfony/css-selector v4.0.4 requires php ^7.1.3 -> your PHP version (7.1.2) does not satisfy that requirement.
- Installation request for symfony/css-selector (locked at v4.0.4) -> satisfiable by symfony/css-selector[v4.0.4].

You have to upgrade the version of PHP you have on your machine.