Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Model" not found in /home/alkhalaffamily/public_html/educourses/app/Models/TopicLibraryRequest.php:8 Stack trace: #0 {main} thrown in /home/alkhalaffamily/public_html/educourses/app/Models/TopicLibraryRequest.php on line 8