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WHMCS\Exception\Application\InstallationVersionMisMatch: Version number in database is invalid in /www/wwwroot/client.iithost.com/vendor/whmcs/whmcs-foundation/lib/Application/ApplicationServiceProvider.php:0
Stack trace:
#0 /www/wwwroot/client.iithost.com/init.php(0): WHMCS\Application\ApplicationServiceProvider::checkVersion()
#1 /www/wwwroot/client.iithost.com/index.php(0): unknown()
#2 {main}