System update in progress ... making things better than before.
WHMCS\Exception\Application\InstallationVersionMisMatch: Database version '9.0.7-release.1' does not match file version '9.0.9-release.1' in /var/www/html/public_html/vendor/whmcs/whmcs-foundation/lib/Application/ApplicationServiceProvider.php:0
Stack trace:
#0 /var/www/html/public_html/init.php(0): WHMCS\Application\ApplicationServiceProvider::checkVersion()
#1 /var/www/html/public_html/index.php(0): unknown()
#2 {main}