Error installing: Command errored out with exit status -4

[leosole]

I get this error trying to install kerasplotlib with pip install kerasplotlib

Collecting kerasplotlib
  Using cached kerasplotlib-0.1.6.tar.gz (3.5 kB)
    ERROR: Command errored out with exit status -4:
     command: /Users/leo/opt/anaconda3/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/h9/c01_24c11vd5d9_cg8mjjv700000gn/T/pip-install-1ud72p3s/kerasplotlib/setup.py'"'"'; __file__='"'"'/private/var/folders/h9/c01_24c11vd5d9_cg8mjjv700000gn/T/pip-install-1ud72p3s/kerasplotlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/h9/c01_24c11vd5d9_cg8mjjv700000gn/T/pip-pip-egg-info-1x8_ot92
         cwd: /private/var/folders/h9/c01_24c11vd5d9_cg8mjjv700000gn/T/pip-install-1ud72p3s/kerasplotlib/
    Complete output (0 lines):
    ----------------------------------------
ERROR: Command errored out with exit status -4: python setup.py egg_info Check the logs for full command output.