Command "app:install" is not defined

[ghost]

Installing Onlyoffice causes the following error. All group_vars are default.

  cmd: docker exec --user www-data nextcloud php occ app:install onlyoffice
  delta: '0:00:00.624761'
  end: '2020-02-03 18:44:54.904508'
  msg: non-zero return code
  rc: 1
  start: '2020-02-03 18:44:54.279747'
  stderr: |2-


      Command "app:install" is not defined.

      Did you mean one of these?
          app:check-code
          maintenance:install
  stderr_lines: <omitted>
  stdout: Nextcloud is not installed - only a limited number of commands are available
  stdout_lines: <omitted>

[ReinerNippes]

that should be a subsequent error of #34