Dear, Gleamtech Support

We have a problem with viewer. We have 2 server, first for our web application and second for viewer.
Our web application using asp.net core with OS Centos 7 and using Apache for web server, then Viewer server using Windows Server 2012 R2 and asp.net.
We try to access Viewer Server from webapp using Reverse-Proxy, sometimes, if we open the document, like pdf or tiff via webapp,
we have some error