Warning: Undefined variable $billingCollectionReport in /home/shikkhaplus/public_html/guk_bk/resources/views/billing/report/billingCollectionReport.blade.php on line 8

Fatal error: Uncaught Error: Call to a member function sum() on null in /home/shikkhaplus/public_html/guk_bk/resources/views/billing/report/billingCollectionReport.blade.php:8 Stack trace: #0 {main} thrown in /home/shikkhaplus/public_html/guk_bk/resources/views/billing/report/billingCollectionReport.blade.php on line 8