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I am trying to update a site to Drupal 8.7 and getting a weird set of errors. Can someone point me to how to best diagnose and fix the problem?

Here are the steps that I am taking:

  1. When I try to update Drupal I use: composer update drupal/core webflo/drupal-core-require-dev --with-all-dependencies

    This results in

    > DrupalProject\composer\ScriptHandler::checkComposerVersion
    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
        - drush/drush 9.6.2 requires chi-teck/drupal-code-generator ^1.28.1 -> satisfiable by chi-teck/drupal-code-generator[1.x-dev].
        - drush/drush 9.6.2 requires chi-teck/drupal-code-generator ^1.28.1 -> satisfiable by chi-teck/drupal-code-generator[1.x-dev].
        - drush/drush 9.6.2 requires chi-teck/drupal-code-generator ^1.28.1 -> satisfiable by chi-teck/drupal-code-generator[1.x-dev].
        - Conclusion: don't install chi-teck/drupal-code-generator 1.x-dev
        - Installation request for drush/drush (locked at 9.6.2, required as ^9.0.0) -> satisfiable by drush/drush[9.6.2].
    
  2. results of composer why-not drupal/core 8.7.0:

    webflo/drupal-core-require-dev 8.6.15 requires drupal/core (8.6.15) drupal/core 8.7.0 requires egulias/email-validator (^2.0) drupal-composer/drupal-project - requires egulias/email-validator (^1.0)

  3. Contents of composer.json:

    {
        "name": "drupal-composer/drupal-project",
        "description": "Project template for Drupal 8 projects with composer",
        "type": "project",
        "license": "GPL-2.0-or-later",
        "authors": [
            {
                "name": "",
                "role": ""
            }
        ],
        "repositories": [
            {
                "type": "composer",
                "url": "https://packages.drupal.org/8"
            }
        ],
        "require": {
            "chi-teck/drupal-code-generator": "dev-master",
            "composer/installers": "^1.2",
            "cweagans/composer-patches": "^1.6.5",
            "drupal-composer/drupal-scaffold": "^2.5",
            "drupal/admin_toolbar": "^1.25",
            "drupal/chosen": "^2.6",
            "drupal/ckeditor_a11ychecker": "^1.0",
            "drupal/ckeditor_balloonpanel": "^1.1",
            "drupal/ckeditor_div_manager": "^1.0",
            "drupal/ckeditor_liststyle": "^1.3",
            "drupal/ckeditor_uploadimage": "^1.7",
            "drupal/console": "^1.0.2",
            "drupal/core": "^8.6",
            "drupal/devel": "^2.0",
            "drupal/entity_reference_integrity": "^1.0@RC",
            "drupal/eva": "^1.3",
            "drupal/imce": "^1.7",
            "drupal/inline_entity_form": "^1.0@RC",
            "drupal/ldap": "^3.0@beta",
            "drupal/markup": "^1.0@beta",
            "drupal/masquerade": "^2.0@beta",
            "drupal/migrate_plus": "^4.1",
            "drupal/migrate_source_csv": "^2.2",
            "drupal/migrate_tools": "^4.1",
            "drupal/module_filter": "^3.1",
            "drupal/readonly_field_widget": "^1.2",
            "drupal/serial": "1.x-dev",
            "drupal/taxonomy_access_fix": "^2.6",
            "drupal/token": "^1.5",
            "drupal/uuid_extra": "1.x-dev",
            "drush/drush": "^9.0.0",
            "egulias/email-validator": "^1.0",
            "vlucas/phpdotenv": "^2.4",
            "webflo/drupal-core-require-dev": "^8.6",
            "webflo/drupal-finder": "^1.0.0",
            "webmozart/path-util": "^2.3"
        },
        "require-dev": {
        },
        "conflict": {
            "drupal/drupal": "*"
        },
        "minimum-stability": "dev",
        "prefer-stable": true,
        "config": {
            "sort-packages": true
        },
        "autoload": {
            "classmap": [
                "scripts/composer/ScriptHandler.php"
            ],
            "files": ["load.environment.php"]
        },
        "scripts": {
            "pre-install-cmd": [
                "DrupalProject\\composer\\ScriptHandler::checkComposerVersion"
            ],
            "pre-update-cmd": [
                "DrupalProject\\composer\\ScriptHandler::checkComposerVersion"
            ],
            "post-install-cmd": [
                "DrupalProject\\composer\\ScriptHandler::createRequiredFiles"
            ],
            "post-update-cmd": [
                "DrupalProject\\composer\\ScriptHandler::createRequiredFiles"
            ]
        },
        "extra": {
            "patchLevel": {
                "drupal/core": "-p2"
            },
            "installer-paths": {
                "web/core": ["type:drupal-core"],
                "web/libraries/{$name}": ["type:drupal-library"],
                "web/modules/contrib/{$name}": ["type:drupal-module"],
                "web/profiles/contrib/{$name}": ["type:drupal-profile"],
                "web/themes/contrib/{$name}": ["type:drupal-theme"],
                "drush/Commands/{$name}": ["type:drupal-drush"]
            },
            "drupal-scaffold": {
                "initial": {
                    ".editorconfig": "../.editorconfig",
                    ".gitattributes": "../.gitattributes"
                }
            }
        }
    }
    
  4. Results from composer outdated:

    alchemy/zippy                      0.4.3              0.4.9
    chi-teck/drupal-code-generator     dev-master 8209866 dev-master 4960fe0
    dflydev/dot-access-data            v1.1.0             v2.0.0
    drupal/core                        8.6.15             8.7.0
    egulias/email-validator            1.2.15             2.1.7
    league/container                   2.4.1              3.2.2
    paragonie/random_compat            v2.0.18            v9.99.99
    phar-io/manifest                   1.0.1              1.0.3
    phar-io/version                    1.0.1              2.0.1
    phpdocumentor/type-resolver        0.4.0              0.7.1
    phpunit/php-code-coverage          5.3.2              7.0.3
    phpunit/php-file-iterator          1.4.5              2.0.2
    phpunit/php-timer                  1.0.9              2.1.1
    phpunit/php-token-stream           2.0.2              3.0.1
    phpunit/phpunit                    6.5.14             8.1.3              
    phpunit/phpunit-mock-objects       5.0.10             6.1.2              Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested.
    ralouphie/getallheaders            2.0.5              3.0.3
    sebastian/comparator               2.1.3              3.0.2
    sebastian/diff                     2.0.1              3.0.2
    sebastian/environment              3.1.0              4.2.1
    sebastian/global-state             2.0.0              3.0.0
    sebastian/resource-operations      1.0.0              2.0.1
    stecman/symfony-console-completion 0.9.0              0.10.0
    symfony-cmf/routing                1.4.1              2.1.0
    symfony/config                     v3.4.27            v4.2.8
    symfony/console                    v3.4.27            v4.2.8
    symfony/css-selector               v3.4.27            v4.2.8
    symfony/debug                      v3.4.27            v4.2.8
    symfony/dependency-injection       v3.4.27            v4.2.8
    symfony/dom-crawler                v3.4.27            v4.2.8
    symfony/event-dispatcher           v3.4.27            v4.2.8
    symfony/filesystem                 v3.4.27            v4.2.8
    symfony/finder                     v3.4.27            v4.2.8
    symfony/http-foundation            v3.4.27            v4.2.8
    symfony/http-kernel                v3.4.27            v4.2.8
    symfony/phpunit-bridge             v3.4.27            v4.2.8
    symfony/process                    v3.4.27            v4.2.8
    symfony/routing                    v3.4.27            v4.2.8
    symfony/serializer                 v3.4.27            v4.2.8
    symfony/translation                v3.4.27            v4.2.8
    symfony/validator                  v3.4.27            v4.2.8
    symfony/yaml                       v3.4.27            v4.2.8
    twig/twig                          v1.40.1            v2.9.0
    typo3/phar-stream-wrapper          v2.1.0             v3.1.0
    vlucas/phpdotenv                   v2.5.2             v3.3.3
    webflo/drupal-core-require-dev     8.6.15             8.7.0
    zendframework/zend-diactoros       1.8.6              2.1.2
    

Per suggestion from @fgrep, I removed composer.lock and vendor/. The result was even more errors: (see File linked as question was getting too long)

1

I fixed it by deleting composer.lock and vendor:

rm -Rf composer.lock vendor/

Then I ran a composer update:

composer update
1
  • thank you for the suggestion, but that did not work. I will edit my question to add in the results of that command. – Kevin Finkenbinder May 7 '19 at 19:07
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The problem turned out to be that the composer.json had a requirement for "egulias/email-validator": "^1.0" and 8.7 requires 2.0. I could not find any reason why 1.0 was in the requirements. When I removed that requirement, the update proceeded without any problem.

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