Warning: include(C:\xampp\htdocs\owncloud/config/config.php): failed to open stream: No such file or directory in C:\xampp\htdocs\owncloud\updater\src\Utils\Locator.php on line 233

Warning: include(): Failed opening 'C:\xampp\htdocs\owncloud/config/config.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\owncloud\updater\src\Utils\Locator.php on line 233
updater.secret is undefined in config/config.php. Either browse the admin settings in your ownCloud and click "Open updater" or define a strong secret using

php -r 'echo password_hash("MyStrongSecretDoUseYourOwn!", PASSWORD_DEFAULT)."\n";'

and set this in the config.php.