changelog/10.5.0_2020-07-31/36510
Change: Drop PHP 7.1 support across the platform
Support for security fixes for PHP 7.1 ended in Dec 2019
ownCloud core no longer supports PHP 7.1.
Ensure that you are using PHP 7.2 or later.
https://github.com/owncloud/core/issues/36510
https://github.com/owncloud/core/pull/37100
https://www.php.net/supported-versions.php