cms-package-dir composer deprecation
Config option "cms-package-dir" has not been set or set to a value different from "{$vendor-dir}/typo3/cms". This option will be removed without substitution with typo3/cms-composer-installers 2.0. With 2.0 the typo3/cms package will always be installed in the vendor directory. To get rid of this warning, use the following command to set the option to a not deprecated value: composer config extra.typo3/cms.cms-package-dir '{$vendor-dir}/typo3/cms'