contao-bootstrap/core keine Installation in Contao 4.4 möglich

Hallo, beim installieren über den Contao Manager bekomme ich diese Meldung beim Versuch, contao-bootstrap/core zu installieren. PHP Version ist wie gefordert 7.1.

Was kann ich tun?

Code:

Installation failed, reverting /html/contao/composer.json to its original content. -------------------------------------------------------- Exception occured: Error: command exit code was 2 #0 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core/src/Task/Composer/AbstractComposerCommandTask.php(166): Tenside\Core\Task\Composer\AbstractComposerCommandTask->executeCommand(Object(Tenside\Core\Task\Composer\WrappedCommand\RequireCommand), Object(Symfony\Component\Console\Input\ArrayInput), Object(Tenside\Core\Task\TaskOutput)) #1 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core/src/Task/Task.php(173): Tenside\Core\Task\Composer\AbstractComposerCommandTask->doPerform() #2 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core/src/Task/Runner.php(89): Tenside\Core\Task\Task->perform('/html/contao/co...') #3 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core-bundle/src/Command/RunTaskCommand.php(82): Tenside\Core\Task\Runner->run('/html/contao/co...') #4 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Command/Command.php(264): Tenside\CoreBundle\Command\RunTaskCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #5 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core-bundle/src/Command/RunTaskCommand.php(61): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #6 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Application.php(887): Tenside\CoreBundle\Command\RunTaskCommand->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #7 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Application.php(223): Symfony\Component\Console\Application->doRunCommand(Object(Tenside\CoreBundle\Command\RunTaskCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #8 phar:///html/contao/web/contao-manager.phar.php/api/ApiApplication.php(71): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #9 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Application.php(130): Contao\ManagerApi\ApiApplication->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #10 phar:///html/contao/web/contao-manager.phar.php/api/console(74): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #11 /html/contao/web/contao-manager.phar.php(55): require('phar:///html/co...') #12 {main} Chained exception: Error: command exit code was 2 #0 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core/src/Task/Composer/AbstractComposerCommandTask.php(166): Tenside\Core\Task\Composer\AbstractComposerCommandTask->executeCommand(Object(Tenside\Core\Task\Composer\WrappedCommand\RequireCommand), Object(Symfony\Component\Console\Input\ArrayInput), Object(Tenside\Core\Task\TaskOutput)) #1 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core/src/Task/Task.php(173): Tenside\Core\Task\Composer\AbstractComposerCommandTask->doPerform() #2 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core/src/Task/Runner.php(89): Tenside\Core\Task\Task->perform('/html/contao/co...') #3 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core-bundle/src/Command/RunTaskCommand.php(82): Tenside\Core\Task\Runner->run('/html/contao/co...') #4 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Command/Command.php(264): Tenside\CoreBundle\Command\RunTaskCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #5 phar:///html/contao/web/contao-manager.phar.php/vendor/tenside/core-bundle/src/Command/RunTaskCommand.php(61): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #6 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Application.php(887): Tenside\CoreBundle\Command\RunTaskCommand->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #7 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Application.php(223): Symfony\Component\Console\Application->doRunCommand(Object(Tenside\CoreBundle\Command\RunTaskCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #8 phar:///html/contao/web/contao-manager.phar.php/api/ApiApplication.php(71): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #9 phar:///html/contao/web/contao-manager.phar.php/vendor/symfony/console/Application.php(130): Contao\ManagerApi\ApiApplication->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #10 phar:///html/contao/web/contao-manager.phar.php/api/console(74): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #11 /html/contao/web/contao-manager.phar.php(55): require('phar:///html/co...') #12 {main}