$ netlify help lm
Netlify Large Media
USAGE
$ netlify lm:COMMAND
COMMANDS
lm:info Netlify Large Media
lm:install Configures your computer to use Netlify Large Media.
lm:setup Configures your site to use Netlify Large Media.
The first two commands are covered in the requirements documentation.
If that doesn’t resolve the issue, please let us know.