Cannot open folders from wi-fi network.

I have a Ubuntu laptop in my wi-fi network and I have turned on Sharing of "Documents" and "Downloads" folders.

When I go to the "Network" option in "Finder", it shows up the Ubuntu laptop and I can open it and can see that "Documents" and "Downloads" folders are there.

But the problem occurs when I try to open any of those folders. It shows me the following alert.

The operation can’t be completed because the original item for “Downloads” can’t be found.

I have enabled all the necessary permissions in Ubuntu.

Please help me.

Checkout this question on Ubuntu Site: https://askubuntu.com/q/1312717/1066175

Image #1: https://i.stack.imgur.com/V97dN.png

Image #2: https://i.stack.imgur.com/V97dN.png