code does not comply with psr-4 autoloading standard laravel 8

[RohitM-IN]

it seems while installing the package composer require smsgatewayme/client its does not comply with psr-4 autoloading standard i have included the errors below

Class SMSGatewayMe\Client\Api\CallbackApiTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\CallbackApiTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\CallbackSearchResultTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\CallbackSearchResultTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\CallbackTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\CallbackTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\CancelMessageRequestTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\CancelMessageRequestTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Api\ContactApiTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\ContactApiTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\ContactSearchResultTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\ContactSearchResultTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\ContactTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\ContactTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\CreateCallbackRequestTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\CreateCallbackRequestTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\CreateContactRequestTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\CreateContactRequestTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Api\DeviceApiTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\DeviceApiTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\DeviceAttributesTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\DeviceAttributesTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\DeviceSearchResultTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\DeviceSearchResultTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\DeviceTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\DeviceTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\ErrorResponseTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\ErrorResponseTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\ErrorTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\ErrorTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\FatalResponseTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\FatalResponseTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Api\MessageApiTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\MessageApiTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\MessageLogTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\MessageLogTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\MessageSearchResultTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\MessageSearchResultTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\MessageTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\MessageTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\SearchFilterTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\SearchFilterTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\SearchOrderByTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\SearchOrderByTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\SearchTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\SearchTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\SendMessageRequestTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\SendMessageRequestTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\UpdateCallbackRequestTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\UpdateCallbackRequestTest.php does not comply with psr-4 autoloading standard. Skipping.
Class SMSGatewayMe\Client\Model\UpdateContactRequestTest located in D:/dev/project/xxx/vendor/smsgatewayme/client/lib\Swagger\Client\Tests\UpdateContactRequestTest.php does not comply with psr-4 autoloading standard. Skipping.