Fatal error: Uncaught Error: Class 'Orchestra\Testbench\TestCase' not found in C:\xampp\htdocs\iglooapp\vendor\cviebrock\eloquent-sluggable\tests\TestCase.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\iglooapp\vendor\cviebrock\eloquent-sluggable\tests\TestCase.php on line 13