GateOne ssl error raspberry pi

I am ruing GateOne on a raspberry Pi and it starts and run perfectly but when I try to coect to the server on ipadress:3333 (I changed the port to 3333 I get the error

[W 160510 09:24:27 iostream:1276] SSL Error on 12 ('192.168.1.89', 62001): [SSL: HTTP_REQUEST] http request (_ssl.c:581)

and in my browser it tells me the network coection dropped out. What is going on?