Missing icons in statusline after fresh install
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## Expected behavior
Environment:
  - OS: MacOS BigSur 11.6
  - Vim: NVIM v0.5.1
  - iTerm: Build 3.3.7

After a successful fresh install, to have proper icon in the `statusline` and the buffer list. See the screenshot below.

## How to reproduce
1. Run: `curl -sLf https://spacevim.org/install.sh | bash -s -- -i`
2. Open a python file: `vim foo.py`

## Output of the `:SPDebugInfo!`
See this gist:
https://gist.github.com/pievalentin/25fd91652dce2946f266e16e83b2d872

## Screenshots

<img width="976" alt="Screen Shot 2021-11-02 at 11 41 22 AM" src="https://user-images.githubusercontent.com/14977219/139880146-6144c991-cfb4-4224-b0d1-7528a81e5bbc.png">


I think it must be a simple bug 😅 but I could not find a fix in the list of closed issues.

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