ansible synchronize error playbook

gistfile1.txt

prm.yml:

---
- hosts: all
  sudo: yes

  vars_files:
  - defaults/main.yml

  tasks:
  - include: tasks/main.yml

######

tasks/main.yml:
---
- include: pkg.yml tags=pkg
- include: gem.yml tags=gem
- include: repo.yml tags=repo

####

tasks/repo.yml:
---
- name: repo - sync local files with repo
  synchronize: src=files/repo/ dest={{ prm_repo_directory }} archive=no

####


prm_repo_directory: /srv/repo