Fatal error: Uncaught Error: Call to undefined function FOSSBilling\getenv() in /home/hostxify/public_html/billing/library/FOSSBilling/Environment.php:31 Stack trace: #0 /home/hostxify/public_html/billing/library/FOSSBilling/Environment.php(55): FOSSBilling\Environment::getCurrentEnvironment() #1 /home/hostxify/public_html/billing/load.php(158): FOSSBilling\Environment::isTesting() #2 [internal function]: exceptionHandler(Object(Error)) #3 {main} thrown in /home/hostxify/public_html/billing/library/FOSSBilling/Environment.php on line 31