Fatal error: Uncaught Error: Using $this when not in object context in /home/airtimer/public_html/app/code/Magiccart/Magicproduct/view/adminhtml/templates/category-custom.phtml:13 Stack trace: #0 {main} thrown in /home/airtimer/public_html/app/code/Magiccart/Magicproduct/view/adminhtml/templates/category-custom.phtml on line 13