You need to add

"autoload": { "psr-4": { "App\": "app/", .... "tulsiramk\dynamicdb\": "vendor/tulsiramk/dynamicdb/src/"

    }

to your root composer.json

And run composer dump-autolo

////////////////////////////////////////////////

config/app.php

'providers' => [

.............
tulsiramk\dynamicdb\DynamicDBServiceProvider::class,

]