HELP ...no GUI connected; waiting for a connection on host h..., port 21212

Hello,

can you please help me...

i am trying to install NWSneakPreviewSP16 but i am getting this message...

what can i do?

thank you...

regards

SAPinst is getting started.

Please be patient ...

guiengine: no GUI connected; waiting for a connection on host h..., port 21212 to continue with the installation