我在安装tagbar.vmb插件时碰到了如下错误，求教

tagbar.vmb" 6516L, 233118C
Error detected while processing function vimball#Vimball:
line 10:
(Vimball) The current file does not appear to be a Vimball!
Error detected while processing command

求大神帮助 我是vim tagbar.vmb之后 输入命令so%出现的这个错误