Fatal error: Uncaught Error: Class 'Cviebrock\EloquentSluggable\Tests\TestCase' not found in C:\xampp\htdocs\iglooapp\vendor\cviebrock\eloquent-sluggable\tests\OnUpdateTests.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\iglooapp\vendor\cviebrock\eloquent-sluggable\tests\OnUpdateTests.php on line 11