Buffered Response Request Handler warning

Hi Everybody

I’m using Ignition v 7.7.6
I have alway this warnings logged in the console

WARN 10.17.16 WebPageRenderer The Buffered response should be handled by BufferedResponseRequestHandler
WARN 10.10.46 WebPageRenderer The Buffered response should be handled by BufferedResponseRequestHandler
WARN 9.58.40 WebPageRenderer The Buffered response should be handled by BufferedResponseRequestHandler
WARN 2016-03-24 9.00.57 WebPageRenderer The Buffered response should be handled by BufferedResponseRequestHandler

Can you suggest me the cause of these logs?

Best regards
Andrea