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WHMCS\Exception\Application\InstallationVersionMisMatch: File version '8.7.3-release.1' could not be created. Core files not synchronized. in /home/weborder/public_html/support/vendor/whmcs/whmcs-foundation/lib/Application/ApplicationServiceProvider.php:0
Stack trace:
#0 /home/weborder/public_html/support/init.php(0): WHMCS\Application\ApplicationServiceProvider::checkVersion()
#1 /home/weborder/public_html/support/register.php(0): unknown()
#2 {main}