Fatal error: Uncaught Error: Class "Tests\TestCase" not found in C:\Servers\htdocs\inventory.fitzalan.co.uk\tests\Feature\Companies\Ui\CreateCompaniesTest.php:8 Stack trace: #0 {main} thrown in C:\Servers\htdocs\inventory.fitzalan.co.uk\tests\Feature\Companies\Ui\CreateCompaniesTest.php on line 8