WHMCS report this problem:
Your environment appears to be running a different PHP version (5.6.37) for the System Cron than the currently loaded PHP version (7.2.21). This may cause issues running your System Cron.
So cron on whmcs doesn't work any more. Whmcs is installed on webserver apache with PHP-FPM 7.2 CWP Pro. I try to reinstall CWP, WHMCS but the problem is not solved. This occurred a month ago suddenly