Shopware Update schlägt fehl 6.6.8.2 auf 6.6.9.0

Hallo Das Shopwareupdate schlägt via Installer fehl:

Fehlermeldung:

Run Update preparations
> pre-update-cmd: Symfony\Flex\Flex->configureInstaller
Loading composer repositories with package information
> pre-pool-create: Symfony\Flex\Flex->truncatePackages
Updating dependencies
Dependency resolution completed in 0.018 seconds
Analyzed 1608 packages to resolve dependencies
Analyzed 24975 rules to resolve dependencies
Nothing to modify in lock file
Dependency resolution completed in 0.001 seconds
Writing lock file
Installing dependencies from lock file (including require-dev)
> pre-operations-exec: Symfony\Flex\Flex->recordOperations
Nothing to install, update or remove
Generating optimized autoload files
> post-autoload-dump: Symfony\Component\Runtime\Internal\ComposerPlugin->updateAutoloadFile
141 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
> post-update-cmd: Symfony\Flex\Flex->update

Run composer recipes at any time to see the status of your Symfony recipes.

No security vulnerability advisories found.

Symfony operations: 21 recipes (75a55fcab2bb4e3218f5b1721f25e00e)
  - Configuring symfony/flex (>=2.4): From github.com/symfony/recipes:main
    Copying files from recipe

In CopyFromRecipeConfigurator.php line 125:
                                                                       
  [ErrorException]                                                     
  file_put_contents(./.env): Failed to open stream: Permission denied  
                                                                       

Exception trace:
  at /html/shopware/vendor/symfony/flex/src/Configurator/CopyFromRecipeConfigurator.php:125
 Composer\Util\ErrorHandler::handle() at n/a:n/a
 file_put_contents() at /html/shopware/vendor/symfony/flex/src/Configurator/CopyFromRecipeConfigurator.php:125
 Symfony\Flex\Configurator\CopyFromRecipeConfigurator->copyFile() at /html/shopware/vendor/symfony/flex/src/Configurator/CopyFromRecipeConfigurator.php:91
 Symfony\Flex\Configurator\CopyFromRecipeConfigurator->copyFiles() at /html/shopware/vendor/symfony/flex/src/Configurator/CopyFromRecipeConfigurator.php:28
 Symfony\Flex\Configurator\CopyFromRecipeConfigurator->configure() at /html/shopware/vendor/symfony/flex/src/Configurator.php:60
 Symfony\Flex\Configurator->install() at /html/shopware/vendor/symfony/flex/src/Flex.php:448
 Symfony\Flex\Flex->install() at /html/shopware/vendor/symfony/flex/src/Flex.php:320
 Symfony\Flex\Flex->update() at /html/shopware/vendor/symfony/flex/src/Command/InstallRecipesCommand.php:138
 Symfony\Flex\Command\InstallRecipesCommand->execute() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/symfony/console/Command/Command.php:326
 Symfony\Component\Console\Command\Command->run() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/symfony/console/Application.php:1078
 Symfony\Component\Console\Application->doRunCommand() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/symfony/console/Application.php:324
 Symfony\Component\Console\Application->doRun() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/composer/composer/src/Composer/Console/Application.php:407
 Composer\Console\Application->doRun() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/symfony/console/Application.php:175
 Symfony\Component\Console\Application->run() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/composer/composer/src/Composer/Console/Application.php:147
 Composer\Console\Application->run() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/composer/composer/bin/composer:94
 include() at phar:///html/shopware/public/shopware-installer.phar.php/vendor/bin/composer:119
 require() at /html/shopware/public/shopware-installer.phar.php:37

symfony:recipes:install [--force] [--reset] [--] [...]

Vielleicht hat jemand Rat?

Hier scheint ein Rechteproblem vorzuliegen, offenbar kann nicht in die .env Datei geschrieben werden.