Deployment failure with ansible issue

[tuxpeople]

I'm getting this error while deploying:

TASK [k8s-setup : Copy Keepalived manifest and config files into cluster] ***********************************************************************************************************************************************************************************************************************************************************
Wednesday 02 October 2019  13:17:18 +0200 (0:00:00.666)       0:04:54.832 *****
fatal: [172.16.202.130]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'ansible.vars.hostvars.HostVarsVars object' has no attribute 'ansible_eth1'"}

I tried to fix this by adding ansible_eth1: eth1 to the group_vars. But no I'm getting this error:

TASK [k8s-setup : Copy Keepalived manifest and config files into cluster] ***********************************************************************************************************************************************************************************************************************************************************
Wednesday 02 October 2019  13:30:26 +0200 (0:00:00.679)       0:04:42.554 *****
fatal: [172.16.202.130]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'ansible.parsing.yaml.objects.AnsibleUnicode object' has no attribute 'ipv4'"}

Please advise. Ansible used:

ansible 2.8.5
  config file = /Users/tdeutsch/git/kube-ansible/ansible.cfg
  configured module search path = ['/Users/tdeutsch/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/Cellar/ansible/2.8.5/libexec/lib/python3.7/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.7.4 (default, Sep  7 2019, 18:27:02) [Clang 10.0.1 (clang-1001.0.46.4)]

[Calvinn097]

try change hostvars[inventory_hostname].ansible_default_ipv4.address into hostvars[inventory_hostname]['ansible_default_ipv4']['address'] on all file that use it