Fatal error: Uncaught Symfony\Component\HttpClient\Exception\TransportException: Could not resolve host: api-demo.ksef.mf.gov.pl for "https://api-demo.ksef.mf.gov.pl/v2/auth/challenge". in /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Response/CurlResponse.php:324 Stack trace: #0 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Response/TransportResponseTrait.php(171): Symfony\Component\HttpClient\Response\CurlResponse::perform() #1 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Response/CommonResponseTrait.php(145): Symfony\Component\HttpClient\Response\CurlResponse::stream() #2 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Response/TransportResponseTrait.php(52): Symfony\Component\HttpClient\Response\CurlResponse::initialize() #3 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Internal/HttplugWaitLoop.php(119): Symfony\Component\HttpClient\Response\CurlResponse->getStatusCode() #4 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Psr18Client.php(111): Symfony\Component\HttpClient\Internal\HttplugWaitLoop::createPsr7Response() #5 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/HttpClient/Adapters/DefaultHttpAdapter.php(25): Symfony\Component\HttpClient\Psr18Client->sendRequest() #6 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/HttpClient/HttpClient.php(104): N1ebieski\KSEFClient\HttpClient\Adapters\DefaultHttpAdapter->sendRequest() #7 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/Requests/Auth/Challenge/ChallengeHandler.php(27): N1ebieski\KSEFClient\HttpClient\HttpClient->sendRequest() #8 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/Resources/Auth/AuthResource.php(39): N1ebieski\KSEFClient\Requests\Auth\Challenge\ChallengeHandler->handle() #9 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/ClientBuilder.php(429): N1ebieski\KSEFClient\Resources\Auth\AuthResource->challenge() #10 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/ClientBuilder.php(317): N1ebieski\KSEFClient\ClientBuilder->handleAuthorisationByKsefToken() #11 /home/transfer/gocores.com/ksef.gocores.com/index.php(18): N1ebieski\KSEFClient\ClientBuilder->build() #12 {main} Next Symfony\Component\HttpClient\Exception\TransportException: Could not resolve host: api-demo.ksef.mf.gov.pl for "https://api-demo.ksef.mf.gov.pl/v2/auth/challenge". in /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Chunk/ErrorChunk.php:56 Stack trace: #0 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Response/CommonResponseTrait.php(146): Symfony\Component\HttpClient\Chunk\ErrorChunk->isFirst() #1 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Response/TransportResponseTrait.php(52): Symfony\Component\HttpClient\Response\CurlResponse::initialize() #2 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Internal/HttplugWaitLoop.php(119): Symfony\Component\HttpClient\Response\CurlResponse->getStatusCode() #3 /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Psr18Client.php(111): Symfony\Component\HttpClient\Internal\HttplugWaitLoop::createPsr7Response() #4 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/HttpClient/Adapters/DefaultHttpAdapter.php(25): Symfony\Component\HttpClient\Psr18Client->sendRequest() #5 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/HttpClient/HttpClient.php(104): N1ebieski\KSEFClient\HttpClient\Adapters\DefaultHttpAdapter->sendRequest() #6 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/Requests/Auth/Challenge/ChallengeHandler.php(27): N1ebieski\KSEFClient\HttpClient\HttpClient->sendRequest() #7 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/Resources/Auth/AuthResource.php(39): N1ebieski\KSEFClient\Requests\Auth\Challenge\ChallengeHandler->handle() #8 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/ClientBuilder.php(429): N1ebieski\KSEFClient\Resources\Auth\AuthResource->challenge() #9 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/ClientBuilder.php(317): N1ebieski\KSEFClient\ClientBuilder->handleAuthorisationByKsefToken() #10 /home/transfer/gocores.com/ksef.gocores.com/index.php(18): N1ebieski\KSEFClient\ClientBuilder->build() #11 {main} Next Symfony\Component\HttpClient\Psr18NetworkException: Could not resolve host: api-demo.ksef.mf.gov.pl for "https://api-demo.ksef.mf.gov.pl/v2/auth/challenge". in /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Psr18Client.php:117 Stack trace: #0 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/HttpClient/Adapters/DefaultHttpAdapter.php(25): Symfony\Component\HttpClient\Psr18Client->sendRequest() #1 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/HttpClient/HttpClient.php(104): N1ebieski\KSEFClient\HttpClient\Adapters\DefaultHttpAdapter->sendRequest() #2 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/Requests/Auth/Challenge/ChallengeHandler.php(27): N1ebieski\KSEFClient\HttpClient\HttpClient->sendRequest() #3 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/Resources/Auth/AuthResource.php(39): N1ebieski\KSEFClient\Requests\Auth\Challenge\ChallengeHandler->handle() #4 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/ClientBuilder.php(429): N1ebieski\KSEFClient\Resources\Auth\AuthResource->challenge() #5 /home/transfer/gocores.com/ksef.gocores.com/vendor/n1ebieski/ksef-php-client/src/ClientBuilder.php(317): N1ebieski\KSEFClient\ClientBuilder->handleAuthorisationByKsefToken() #6 /home/transfer/gocores.com/ksef.gocores.com/index.php(18): N1ebieski\KSEFClient\ClientBuilder->build() #7 {main} thrown in /home/transfer/gocores.com/ksef.gocores.com/vendor/symfony/http-client/Psr18Client.php on line 117