Instalation Ansible Tower - Error

Hello , I am running the installation and get the error below , can anyone help me ?

SO - Ubuntu 14.04
thank you

TASK: [migrations | Check Tower version for supervisor configuration] *********
failed: [localhost] => {“changed”: false, “cmd”: "cat /var/lib/awx/.tower_version ", “delta”: “0:00:00.005843”, “end”: “2015-12-22 09:24:43.038659”, “item”: “”, “rc”: 1, “start”: “2015-12-22 09:24:43.032816”, “stdout_lines”: }
stderr: cat: /var/lib/awx/.tower_version: No such file or directory
…ignoring

TASK: [migrations | Remove old AWX supervisor configuration for Red Hat 6 if we are upgrading from 2.2 (or older)] ***
fatal: [localhost] => error while evaluating conditional: result.rc == 0 and result.stdout|version_compare(‘2.3’, ‘<’)

FATAL: all hosts have already failed – aborting

PLAY RECAP ********************************************************************
to retry, use: --limit @/root/install.retry

localhost : ok=19 changed=0 unreachable=1 failed=0

For tower issues, please use https://support.ansible.com or email support@ansible.com. This list is for the open source ansible project.

Ok, excuse me