sh: 1: /var/aegir/config/letsencrypt/script: Permission denied - Letencrypt not working

when using hosting_https with letencrypt I get the following.

HTTPS certificate directory for insitehost.socialnicheguru.com [success] path /var/aegir/config/letsencrypt.d/insitehost.socialnicheguru.com is writable. [7.09 sec, 57.9 MB] Generating Let's Encrypt certificates. [7.09 sec, 57.91 MB] [notice] Running: /var/aegir/config/letsencrypt/script --cron --config [notice] /var/aegir/config/letsencrypt/config --out /var/aegir/config/letsencrypt.d --domain mysite.com --domain nodejs.mysite.com --domain www.mysite.com [7.09 sec, 57.91 MB] Executing: /var/aegir/config/letsencrypt/script --cron --config /var/aegir/config/letsencrypt/config --out /var/aegir/config/letsencrypt.d --domain mysite.com --domain nodejs.mysite.com --domain www.mysite.com sh: 1: /var/aegir/config/letsencrypt/script: Permission denied sh: 1: /var/aegir/config/letsencrypt/script: Permission denied [7.1 sec, 57.88 MB] [notice] Failed to generate Let's Encrypt certificates. [7.1 sec, 57.88 MB]

I am unclear as to weather I need to install letsencrypt to my system manually or if the module takes care of doing that. Please advise.