I just wanted to migrate my owncloud to nextcloud by using this manual from nextcloud-site.
After downloading and moving the file to the updater dirctory and open this Link /owncloud/updater/index.php I got this issue:
Could not read data directory from config.php.
Any ideas? There is no config.php file in the update-directory:
app application.php box.json composer.json composer.lock CONTRIBUTING.md COPYING-AGPL index.php nbproject pub README.md src vendor
thanks in advance
Check the path to the data directory in config.php is correct, and that the permissions on it allow the webserver user to access it.
there was missing the following line in my config.php: