Composer error. Unable to continue.

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--- Commands Executed ---
sudo -u www-data /usr/local/bin/composer config -g discard-changes true
sudo -u www-data /usr/local/bin/composer install --prefer-dist --no-suggest --no-interaction --no-progress --working-dir /var/www/html
Return Code: 1
--- Output ---

--- Errors ---
> Drupal\Core\Composer\Composer::ensureComposerVersion
Script Drupal\Core\Composer\Composer::ensureComposerVersion handling the pre-install-cmd event terminated with an exception

                                                                                                                        
  [RuntimeException]                                                                                                    
  Drupal core development requires Composer 1.9.0, but Composer 1.8.5 is installed. Please run 'composer self-update'.  
                                                                                                                        

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [--] [<packages>]...

image_widget_crop 8.x-2.x-dev branch result

History

UpdatedResult
4 Sep 2019 at 20:18 UTC