Running Sphinx v1.7.6
fatal: not a git repository (or any parent up to mount point /)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

Configuration error:
There is a programable error in your configuration file:

Traceback (most recent call last):
  File "/home/<username>/.local/lib/python3.6/site-packages/sphinx/config.py", line 161, in __init__
    execfile_(filename, config)
  File "/home/<username>/.local/lib/python3.6/site-packages/sphinx/util/pycompat.py", line 150, in execfile_
    exec_(code, _globals)
  File "conf.py", line 145, in <module>
    SHA = check_output(['git', 'describe', '--dirty']).decode('utf-8').strip()
  File "/usr/lib/python3.6/subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.6/subprocess.py", line 418, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['git', 'describe', '--dirty']' returned non-zero exit status 128.

Makefile:20: recipe for target 'html' failed
make: *** [html] Error 2