Git Ssh-keygen fingerprint cannot be generated

I met a god-hole today.

My computer is Ubuntu.

I want to ssh the way to link the company's Gitlab,

When I use the command Ssh-keygen to generate the public key, use VIM to open the public key, then select Right button copy, paste into the Add an SSH key window,

Anyway error: Fingerprint cannot be generated

Solution: Do not use vim to open, with gedit graphics tool to open and copy and paste on OK, you will find that the graphics tool opened after the copy of the public key and Vim opened after the copy of the public key format is not the same, which is the cause of the error.