How to fix “E492: Not an editor command: EmmetInstall”?

I have installed emmet-vim and all worked good. When I added this in vimrc:

let g:user_emmet_install_global = 0 autocmd FileType html,css EmmetInstall
there appeared next error:

Error detected while processing FileType Auto commands for "html": E492: Not an editor command: EmmetInstall
There is my vimrc:

" If using a dark background within the editing area and syntax highlighting
" turn on this option as well
"set background=dark

" Uncomment the following to have Vim jump to the last position when
" reopening a file
"if has("autocmd")
" au BufReadPost * if line("'"") > 1 && line("'"") <= line("$") | exe "normal! g'"" | endif
"endif

" Uncomment the following to have Vim load indentation rules and plugins
" according to the detected filetype.
"if has("autocmd")
" filetype plugin indent on
"endif

" The following are commented out as they cause vim to behave a lot
" differently from regular Vi. They are highly recommended though.
"set showcmd " Show (partial) command in status line.
"set showmatch " Show matching brackets.
"set ignorecase " Do case insensitive matching
"set smartcase " Do smart case matching
"set incsearch " Incremental search
"set autowrite " Automatically save before commands like :next and :make
"set hidden " Hide buffers when they are abandoned
"set mouse=a " Enable mouse usage (all modes)

" Source a global configuration file if available
if filereadable("/etc/vim/vimrc.local")
source /etc/vim/vimrc.local
endif

let g:user_emmet_install_global = 0
autocmd FileType html,css EmmetInstall

Start with the vimrc configuration shown in the issue and verify when emmet-vim is loaded relative to the FileType autocmd for html and css. Confirm whether :EmmetInstall is available at that point, then reproduce the configuration and verify that the E492 error no longer appears.