Can't do Ethernet Debugging in VS2015 - CE8

hI,

Why i cant do Ethernet Debugging in VS2015 for CE8 ?
After i created a simple application and try to Debugging Over Ethernet using VS2015 and it come out with this error at the image. what is the meaning for an error at the image below?

i followed all the steps from this link - > Application Debugging Over Ethernet Using Visual Studio | Toradex Developer Center

what i missed ? please help me !

thanks
mk11

This is a duplicate of

Regards,
Andy