2.3.0 to 2.3.1: magento/module-backend 100.2.8 requires php ~7.0.13|~7.1.0

[bdamage]

System is Ubuntu 18.04, PHP 7.2.16 running Magento 2.3.0 perfectly

Why is the upgrade telling me I have the wrong PHP version?

root@master:/home/{redacted}/domains/staging.{redacted}.com/public_html# composer require magento/product-community-edition=2.3.1 --no-update
./composer.json has been updated
root@master:/home/{redacted}/domains/staging.{redacted}.com/public_html# composer update
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
- magento/module-backend 100.2.8 requires php ~7.0.13|~7.1.0 -> your PHP version (7.2.16) does not satisfy that requirement.

[Anonymous]

Best,

Same issue here, i can not find any solutions yet.

[clivewalkden]

The 100.2.8 version is tied to Magento 2.2.8

Magento 2.3.1 should be loading version 101.0.1 which has "php": "~7.1.3||~7.2.0" requirement

See

https://github.com/magento/magento2/blob/2.2.8/app/code/Magento/Backend/composer.json

Vs.

https://github.com/magento/magento2/blob/2.3.1/app/code/Magento/Backend/composer.json

[Anonymous]

Best,

Thanks fo the reply but my installation does not have such Path:

/app/code/Magento/Backend/composer.json

Where to find the right composer.json file?

I believe it is somewhere in /Vendor But i don't know where to look.

Thanks

[clivewalkden]

Your code won't be there are you've installed the system with composer. It should be at vendor/magento/module-backend/composer.json as your installation failed though it may not be.

What does your composer.json look like in the Magento directory after running

composer require magento/product-community-edition=2.3.1 --no-update

[bdamage]

After running, in my root folder

composer require magento/product-community-edition=2.3.1 --no-update

composer.json in the same folder has no reference to module-backend and appears in full like this:

{
    "name": "magento/project-community-edition",
    "description": "eCommerce Platform for Growth (Community Edition)",
    "type": "project",
    "version": "2.1.3",
    "license": [
        "OSL-3.0",
        "AFL-3.0"
    ],
    "require": {
        "magento/product-community-edition": "2.3.1",
        "composer/composer": "@alpha",
        "fooman/pdfcustomiser-m2": "^8.1",
        "coingate/magento2-plugin": "^1.0",
        "magepal/magento2-gmailsmtpapp": "2.6.0",
        "flancer32/mage2_ext_free_rates": "^0.1.0",
        "thanhdv2811/magento-2-currency-convert": "^1.0"
    },
    "require-dev": {
        "phpunit/phpunit": "~6.2.0",
        "squizlabs/php_codesniffer": "3.2.2",
        "phpmd/phpmd": "@stable",
        "pdepend/pdepend": "2.5.2",
        "lusitanian/oauth": "~0.8.10",
        "sebastian/phpcpd": "~3.0.0",
        "friendsofphp/php-cs-fixer": "~2.10.1"
    },
    "config": {
        "use-include-path": true
    },
    "autoload": {
    "psr-4": {
        "Magento\\Framework\\": "lib/internal/Magento/Framework/",
        "Magento\\Setup\\": "setup/src/Magento/Setup/",
        "Magento\\": "app/code/Magento/",
        "Zend\\Mvc\\Controller\\": "setup/src/Zend/Mvc/Controller/"
    },
        "psr-0": {
            "": "app/code/"
        },
        "files": [
            "app/etc/NonComposerComponentRegistration.php"
        ]
    },
    "autoload-dev": {
        "psr-4": {
            "Magento\\Sniffs\\": "dev/tests/static/framework/Magento/Sniffs/",
            "Magento\\Tools\\": "dev/tools/Magento/Tools/",
            "Magento\\Tools\\Sanity\\": "dev/build/publication/sanity/Magento/Tools/Sanity/",
            "Magento\\TestFramework\\Inspection\\": "dev/tests/static/framework/Magento/TestFramework/Inspection/",
            "Magento\\TestFramework\\Utility\\": "dev/tests/static/framework/Magento/TestFramework/Utility/"
        }
    },
    "minimum-stability": "alpha",
    "prefer-stable": true,
    "repositories": {
        "0": {
            "type": "composer",
            "url": "https://repo.magento.com/"
        },
        "fooman": {
            "type": "composer",
            "url": "https://customer-repos.fooman.co.nz/{redacted}"
        }
    },
    "extra": {
        "magento-force": "override"
    }
}

The composer.json from vendor/magento/module-backend is  the same as your linke, which says it can't handle php later than 7.2.0. Surely this is the problem here, and a mistake on their part? "Magento 2.3.1 is certified for PHP 7.2.11":  https://devdocs.magento.com/guides/v2.3/install-gde/system-requirements-tech.html 

{
    "name": "magento/module-backend",
    "description": "N/A",
    "config": {
        "sort-packages": true
    },
    "require": {
        "php": "~7.1.3||~7.2.0",
        "magento/framework": "102.0.*",
        "magento/module-backup": "100.3.*",
        "magento/module-catalog": "103.0.*",
        "magento/module-config": "101.1.*",
        "magento/module-customer": "102.0.*",
        "magento/module-developer": "100.3.*",
        "magento/module-directory": "100.3.*",
        "magento/module-eav": "102.0.*",
        "magento/module-quote": "101.1.*",
        "magento/module-reports": "100.3.*",
        "magento/module-require-js": "100.3.*",
        "magento/module-sales": "102.0.*",
        "magento/module-security": "100.3.*",
        "magento/module-store": "101.0.*",
        "magento/module-translation": "100.3.*",
        "magento/module-ui": "101.1.*",
        "magento/module-user": "101.1.*"
    },
    "suggest": {
        "magento/module-theme": "101.0.*"
    },
    "type": "magento2-module",
    "license": [
        "OSL-3.0",
        "AFL-3.0"
    ],
    "autoload": {
        "files": [
            "registration.php"
        ],
        "psr-4": {
            "Magento\\Backend\\": ""
        }
    },
    "version": "101.0.0"
}

[clivewalkden]

I suggest you redact the fooman link as it is confidential to you

[Anonymous]

My solution.

I downloaded the magento 2.3.1 instance.

Renamed my composer.json file to composer.json.old

Copied the file composer.json from the fresh magento 2.3.1 to my 2.3.0

I do nut understand your fooman answer.

Problem solved.

[Anonymous]

I have a solution that worked for me

My solution.

I downloaded the magento 2.3.1 instance.

Renamed my composer.json file to composer.json.old

Copied the file composer.json from the fresh magento 2.3.1 to my 2.3.0

Problem solved.

[clivewalkden]

In you composer.json file posted earlier remove everything after

https://customer-repos.fooman.co.nz/

as it contains information that would allow other people to use your paid for modules

Glad you got it working!