Forum doesn't work after latest upgrade

I resized the disk to 35 Gb, but it looks like removed /var/discourse

root@forum-app:/var/www/discourse# cd /var/discourse
bash: cd: /var/discourse: No such file or directory

How can I restore the folder?

This files are kept:

root@forum-app:/var/www/discourse# ls
app         config.ru        discourse.sublime-project  jsconfig.json  migrations    public     test
bin         CONTRIBUTING.md  docs                       lefthook.yml   node_modules  Rakefile   tmp
Brewfile    COPYRIGHT.md     Gemfile                    lib            package.json  README.md  translator.yml
CODEOWNERS  d                Gemfile.lock               LICENSE.txt    patches       script     vendor
config      db               images                     log            plugins       spec       yarn.lock