Transitioning from PSPDFKit Server to Document Engine

PSPDFKit Server has been deprecated and replaced by Document Engine. To start using Document Engine, refer to the migration guide. With Document Engine, you’ll have access to robust new capabilities (read the blog for more information).

The 504 response may be sent by your proxy server. Make sure to increase the timeouts of your proxy server to ensure that responses from PSPDFKit Server get redirected to the clients.