XenForo 2.0.12 is now available for download. We recommend that all users working with previous versions of XenForo 2.0 upgrade to this version in order to increase stability. This version introduces a number of changes to improve compatibility with PHP 7.3.0. However, at present, we do not recommend using PHP 7.3.0 at work due to an error that can lead to incorrect code execution, which in turn can lead to data loss. We believe and hope that this error will be fixed in PHP 7.3.1.