Sharing files between two Macs

Hello,

It is the my corrected question with inside the screen shot themselves. Looking forward for any help and assistance.

I have two iMacs standing side by side running HS last version and having 16 GB memory.

In both Macs file sharing is active. This is the situation on my Mac:

The problem is that when I am trying to transfer a file from my Mac to the neighbor one via file sharing it is functioning very well. But when coming to the second mac and trying to do the same thing I am failing and getting these situations. First is the attempt to connect from the second Mac to my Mac. I try to do it in the three available possibilities.

And the result is always connection failed as presented here:

I'll appreciate any help and assistance to solve this problems.

Thanks and regards