Hallo Andre,
das hilft leider nicht. Gleicher Fehler.
Uncaught PHP Exception Shopware\Core\Framework\Plugin\Requirement\Exception\RequirementStackException: "Could not install plugin, got 1 failure(s). Array ( [0] => Required plugin/package "shopware/platform v6.0.0+dp1" does not match installed version 9999999-dev. ) " at /var/kunden/K10399/development/vendor/shopware/platform/src/Core/Framework/Plugin/Requirement/RequirementExceptionStack.php line 25
Nachtrag: Version 0.9.0 konnte ich aus dem ZIP installieren, der Fehler kommt dann beim Update auf 0.9.1:
Uncaught PHP Exception Shopware\Core\Framework\Plugin\Requirement\Exception\RequirementStackException: "Could not update plugin, got 1 failure(s). Array ( [0] => Required plugin/package "shopware/platform v6.0.0+dp1" does not match installed version 9999999-dev. ) " at /var/kunden/K10399/development/vendor/shopware/platform/src/Core/Framework/Plugin/Requirement/RequirementExceptionStack.php line 25