Fish shell 中的 vf 项目

Question

我在鱼壳上使用虚拟鱼，因此在尝试执行vf project projectName此操作时会抛出以下错误：

vf 项目 pytube

fish: Unknown command 'virtualenv'
/Users/userName/clones/virtualfish/virtual.fish (line 152):     virtualenv $argv $VIRTUALFISH_HOME/$envname
                                                                        ^
in function '__vf_new',
    called on line 52 of file '/Users/userName/clones/virtualfish/virtual.fish',
    with parameter list 'pytube'

in . (source) call of file '-',
    called on line 85 of file '/Users/userName/clones/virtualfish/virtual.fish',

in function 'vf',
    called on line 43 of file '/Users/userName/clones/virtualfish/projects.fish',
    with parameter list 'new pytube'

in function '__vf_project',
    called on line 52 of file '/Users/userName/clones/virtualfish/virtual.fish',
    with parameter list 'pytube'

in . (source) call of file '-',
    called on line 85 of file '/Users/userName/clones/virtualfish/virtual.fish',

in function 'vf',
    called on standard input,
    with parameter list 'project pytube'

Error: The virtualenv wasn't created properly.
virtualenv returned status 127.

我正在使用 OSx，但出现此错误。