Fatal error: Uncaught Error: Using $this when not in object context in /opt/lampp/htdocs/c8skyrocket-stage-bak20250617/views/report/manual_refund/index.php:16 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/c8skyrocket-stage-bak20250617/views/report/manual_refund/index.php on line 16