EDIT 2: Using fiddler I was able to find out that I'm getting a 504 error, but it makes no sense to me how that could possibly be happening.
EDIT: It seems to have something to do with connecting to SQL Server. I found I can export reports that don't use a SqlDataSource just fine, but when I add one then I get this error. But I still have no idea how to debug beyond this.
My Telerik reports are exporting just fine in explorer, but in Chrome I am getting an error page that says "This webpage is not available" and below that it says "ERR_CONNECTION_RESET".
When I hit F12 and look at the network activity, this is the request that is causing the problem:
The odd thing is that I can take the above link and copy/paste it into Explorer and it will open the PDF I just tried to export from Chrome.
Has anyone else run into this? I have no idea how to even proceed in troubleshooting this further :/