Fatal: Prefix parameter missing.

[nangonghuang]

$ git flow version                  
1.12.2 (AVH Edition)

$ git flow release start version_1.8
Fatal: Prefix parameter missing.
Switched to a new branch 'version_1.8'

Summary of actions:
- A new branch 'version_1.8' was created, based on 'develop'
- You are now on branch 'version_1.8'

Follow-up actions:
- Bump the version number now!
- Start committing last-minute fixes in preparing your release
- When done, run:

     git flow release finish 'version_1.8'

$ git flow release list  
Fatal: Prefix parameter missing.
No release branches exist.

You can start a new release branch:

    git flow release start <name> [<base>]

what does "Fatal: Prefix parameter missing." mean ?

[nangonghuang]

..get it , use git flow init -d ,but some parameter was not setted