Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\WebServer\htdocs\bookshelf\database\migrations\2016_07_07_181521_add_summary_to_page_revisions.php:6 Stack trace: #0 {main} thrown in C:\WebServer\htdocs\bookshelf\database\migrations\2016_07_07_181521_add_summary_to_page_revisions.php on line 6