Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/digitalproduct/public_html/projectmanagementsoftware/database/migrations/2019_08_28_2083812_add_invoice_created_column_project_milestones_table.php:7 Stack trace: #0 {main} thrown in /home/digitalproduct/public_html/projectmanagementsoftware/database/migrations/2019_08_28_2083812_add_invoice_created_column_project_milestones_table.php on line 7