**For PSR-4 Auto Loader Users (composer.json):**
Keep the migrations folder inside `classmap` array and do not include it inside psr-4 object under `autoload` head. As migrations' main class Migrator doesn't support namespacing. For example;
"autoload": { "classmap": [ "app/database/migrations" ], "psr-4": { "Acme\\controllers\\": "app/controllers" } }
Then run:
php artisan clear-compiled php artisan optimize:clear composer dump-autoload php artisan optimize
- first clear all compiled autoload files. - Second clear Laravel caches (optional) - Third autoloader for namespaced classes. - Fourth optimize various parts of your Laravel app and builds the autoloader for non-namespaced classes.
From this time onwards, you will not have to do this again and any new migrations will work correctly.

**For PSR-4 Auto Loader Users (composer.json):**
Keep the migrations folder inside `classmap` array and do not include it inside psr-4 object under `autoload` head. As migrations' main class Migrator doesn't support namespacing. For example;
"autoload": { "classmap": [ "app/database/migrations" ], "psr-4": { "Acme\\controllers\\": "app/controllers" } }
Then run:
php artisan clear-compiled php artisan optimize:clear composer dump-autoload php artisan optimize
- First one clears all compiled autoload files. - Second clears Laravel caches (optional) - Third builds the autoloader for namespaced classes. - Fourth optimizes various parts of your Laravel app and builds the autoloader for non-namespaced classes.
From this time on wards, you will not have to do this again and any new migrations will work correctly.