From section 4.8. fast forward merging, in the course the following command is given:
git merge --no-ff bugfix/login-form
In the course video this opens the editor to add in the message etc.
From my system, when I enter that I get:
[name] ~/onedrive/desktop/gitcourse/venus (master)
$ git merge --no-ff bugfix/login-form
merge: bugfix/login-form - not something we can merge
Any ideas?