Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/sourceex/public_html/pm/database/migrations/2018_04_12_100452_add_dropbox_link_column_project_files_table.php:7 Stack trace: #0 {main} thrown in /home/sourceex/public_html/pm/database/migrations/2018_04_12_100452_add_dropbox_link_column_project_files_table.php on line 7