Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /var/www/html/mylaravel/database/migrations/2019_04_25_173958_update_survey_fields_table_v1.php:7 Stack trace: #0 {main} thrown in /var/www/html/mylaravel/database/migrations/2019_04_25_173958_update_survey_fields_table_v1.php on line 7