command with sudo always hang

[imtinge]

such as mina nginx:reload, mina nginx:stop actions, they need input the password to run, but it never prompt, just hanging;

if I add set :execution_mode, :system to the deploy file, these actions works well;but when I run mina nginx:print, it reports errors

 mina nginx:print
sh: line 39: echo "-----> Loading rbenv"
export RBENV_ROOT="$HOME/.rbenv"
export PATH="$HOME/.rbenv/bin:$PATH"
if ! which rbenv >/dev/null; then
  echo "! rbenv not found"
  echo "! If rbenv is installed, check your :rbenv_path setting."
  exit 1
fi
eval "$(rbenv init -)"
echo '


upstream koob {
server unix:///home/deploy/site/koob/shared/tmp/puma.sock fail_timeout=0;
}

server {
listen 80 default deferred;
server_name kbook.wenghuaedu.com
root /home/deploy/site/koob/current/public;

location ^~ /assets/ {
  gzip_static on;
  expires max;
  add_header Cache-Control public;
}

try_files $uri/index.html $uri @koob;
location @koob {
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_redirect off;
  proxy_pass http://koob;
}

error_page 500 502 503 504 /500.html;
client_max_body_size 4G;
keepalive_timeout 10;
}
': No such file or directory
 !     Run Error

what's wrong with my config?

[tachyons]

https://github.com/mina-deploy/mina/blob/master/docs/faq.md#--mina-hangs-after-i-type-my-password-in