FATAL: Tmux Plugin Manager not configured in tmux.conf

[aktech]

TASK [common : Installl Tmux Plugins] ********************************************************************************************************************************************************************************************************
task path: /Users/aktech/dotfiles/playbooks/roles/common/tasks/main.yml:14
Using module file /Users/aktech/anaconda3/lib/python3.6/site-packages/ansible/modules/commands/command.py
<localhost> ESTABLISH LOCAL CONNECTION FOR USER: aktech
<localhost> EXEC /bin/sh -c '/usr/bin/python && sleep 0'
fatal: [localhost]: FAILED! => {
    "changed": true,
    "cmd": [
        "~/.tmux/plugins/tpm/bin/install_plugins"
    ],
    "delta": "0:00:00.027179",
    "end": "2017-11-19 22:19:13.641447",
    "failed": true,
    "invocation": {
        "module_args": {
            "_raw_params": "~/.tmux/plugins/tpm/bin/install_plugins",
            "_uses_shell": false,
            "chdir": null,
            "creates": null,
            "executable": null,
            "removes": null,
            "stdin": null,
            "warn": true
        }
    },
    "msg": "non-zero return code",
    "rc": 1,
    "start": "2017-11-19 22:19:13.614268",
    "stderr": "unknown variable: TMUX_PLUGIN_MANAGER_PATH\nFATAL: Tmux Plugin Manager not configured in tmux.conf\nAborting.",
    "stderr_lines": [
        "unknown variable: TMUX_PLUGIN_MANAGER_PATH",
        "FATAL: Tmux Plugin Manager not configured in tmux.conf",
        "Aborting."
    ],
    "stdout": "",
    "stdout_lines": []
}
	to retry, use: --limit @/Users/aktech/dotfiles/playbooks/osx.retry

[ylogx]

Related docs are: https://github.com/tmux-plugins/tpm#installation