Failed to download ... Unknown error, status code 503

[ning-y]

svg-buddy fails to embed font due to a reported 503 error when downloading a google font:

svg-buddy 1.2.3
Detecting Fonts...
Downloading Fonts [Noto Sans]...
Downloading font Noto Sans and caching it at /home/molecularonco/github/nccs-met-rerun/.svg-buddy/noto-sans.zip...
Failed to download google font noto-sans. Message: Unknown error, status code 503
Usage: svg-buddy INPUT [OUTPUT] [--optimize]
If the OUTPUT path is not submitted a new file is created with the postfix '-e' in the same directory as the INPUT file. If --optimize is set the postfix '-eo' is used.
usage: gnu
 -o,--optimize   If set, simple optimizations are applied to the output
                 SVG to reduce the file size.

Also reported in another unrelated issue in this repository, #6 (comment). The solution proposed in that comment works: download the ZIP file manually and place it in the expected cache directory; but is of course not ideal.