An error occurred when establishing a connection to the server - when viewing projects in Groupshare

We are experiencing an issue when we try to scroll down the project window in Groupshare via browser. It seems to work fine for some time, but after loading a few windows it displays an error: An error occurred when establishing a connection to the server. If I click Ok, it allows me to continue, but the error appears again if i try to load another batch of projects. What might be the issue here?