Please help with these error

agrant@mgmt:/vagrant$ ansible-playbook e45-ssh-addkey.yml -vvvvv
Using /vagrant/ansible.cfg as config file
ERROR! Unexpected Exception: dictionary update sequence element #0 has length 3; 2 is required
the full traceback was:

Traceback (most recent call last):
File “/usr/bin/ansible-playbook”, line 92, in
exit_code = cli.run()
File “/usr/lib/python2.7/dist-packages/ansible/cli/playbook.py”, line 132, in run
inventory = Inventory(loader=loader, variable_manager=variable_manager, host_list=self.options.inventory)
File “/usr/lib/python2.7/dist-packages/ansible/inventory/init.py”, line 92, in init
self.parse_inventory(host_list)
File “/usr/lib/python2.7/dist-packages/ansible/inventory/init.py”, line 159, in parse_inventory
group.vars = combine_vars(group.vars, self.get_group_variables(group.name))
File “/usr/lib/python2.7/dist-packages/ansible/inventory/init.py”, line 527, in get_group_variables
self._vars_per_group[groupname] = self._get_group_variables(groupname, vault_password=vault_password)
File “/usr/lib/python2.7/dist-packages/ansible/inventory/init.py”, line 545, in _get_group_variables
vars = combine_vars(vars, self.get_group_vars(group))
File “/usr/lib/python2.7/dist-packages/ansible/inventory/init.py”, line 727, in get_group_vars
return self._get_hostgroup_vars(host=None, group=group, new_pb_basedir=new_pb_basedir, return_results=return_results)
File “/usr/lib/python2.7/dist-packages/ansible/inventory/init.py”, line 788, in _get_hostgroup_vars
host_results = self._variable_manager.add_group_vars_file(base_path, self._loader)
File “/usr/lib/python2.7/dist-packages/ansible/vars/init.py”, line 616, in add_group_vars_file
data = self._load_inventory_file(path, loader)
File “/usr/lib/python2.7/dist-packages/ansible/vars/init.py”, line 574, in _load_inventory_file
rval.update(data)
ValueError: dictionary update sequence element #0 has length 3; 2 is required

You seem to be mixing Ansible versions.