Hello Thor! The error is caused by recent upstream changes in one of Ansible’s dependencies, which our installer is based on. That changes broke a lot of other projects too. We have fixed the installer already, but haven’t released a new version yet.
As a workaround for now, you could try to apply alpine-313.patch (1.3 KB) like this:
$ cd <eaasi-installer>/eaas/ansible
$ git apply ansible-313.patch
Then simply run prepare.sh again and follow the instructions from the docs.