Error: Undefined constant "Xendit\Lib\XENDIT_PAYMENT_GATEWAY_VERSION" in /var/www/administrator/data/www/example.com/modules/gateways/xendit/lib/XenditRequest.php:99

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Error: Undefined constant "Xendit\Lib\XENDIT_PAYMENT_GATEWAY_VERSION" in /var/www/administrator/data/www/example.com/modules/gateways/xendit/lib/XenditRequest.php:99
Stack trace:
#0 /var/www/administrator/data/www/example.com/modules/gateways/xendit/lib/XenditRequest.php(199): Xendit\Lib\XenditRequest->defaultHeader()
#1 /var/www/administrator/data/www/example.com/modules/gateways/xendit/hooks.php(98): Xendit\Lib\XenditRequest->expire('677af7278652ef0...')
#2 [internal function]: cancelXenditInvoice(Array)
#3 /var/www/administrator/data/www/example.com/vendor/whmcs/whmcs-foundation/lib/Hook/Manager.php(0): call_user_func('cancelXenditInv...', Array)
#4 /var/www/administrator/data/www/example.com/vendor/illuminate/support/Facades/Facade.php(261): WHMCS\Hook\Manager->run('CancelOrder', Array, false)
#5 /var/www/administrator/data/www/example.com/includes/functions.php(0): Illuminate\Support\Facades\Facade::__callStatic('run', Array)
#6 /var/www/administrator/data/www/example.com/includes/orderfunctions.php(0): run_hook('CancelOrder', Array)
#7 /var/www/administrator/data/www/example.com/admin/orders.php(0): changeOrderStatus(17, 'Cancelled')
#8 {main}