Warning: Undefined variable $tpl in C:\xampp\htdocs\astra-backoffice\vendor\filp\whoops\tests\fixtures\template.php on line 1

Fatal error: Uncaught Error: Call to a member function slug() on null in C:\xampp\htdocs\astra-backoffice\vendor\filp\whoops\tests\fixtures\template.php:1 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\filp\whoops\tests\fixtures\template.php on line 1