Installer failed on ubuntu server 18.04

[sfassotte]

``TASK [radiusdesk : Installing PHP7.1 packages (Ubuntu 14+)] ***** failed: [localhost] (item=[u'php7.1-fpm', u'php7.1-mysql', u'php7.1-cli', u'php7.1-gd', u'php7.1-curl', u'php7.1-intl', u'php7.1-xml', u'php7.1-mbstring', u'mysql-server', u'mysql-client']) => {"changed": false, "item": ["php7.1-fpm", "php7.1-mysql", "php7.1-cli", "php7.1-gd", "php7.1-curl", "php7.1-intl", "php7.1-xml", "php7.1-mbstring", "mysql-server", "mysql-client"], "msg": "No package matching 'php7.1-fpm' is available"} to retry, use: --limit @/home/smf/radiusdesk-installer-master/rd-installer-ansible.retry

PLAY RECAP ** localhost : ok=6 changed=3 unreachable=0 failed=1

ubuntu 18.04 server wants php7.2 ?

[sfassotte]

before running installer do:

sudo add-apt-repository ppa:ondrej/php sudo apt-get update

this will allow installation of php7.1

[Rubinni]

i still get the same error while installing Radiusdesk on ubuntu 18 server! any other sol ???