Problems when trying to install the package

[CassandraHjo]

When I tried to install the package as described:

require("devtools")
devtools::install_github(repo = 'zellerlab/SIMBA')

I got this error:

Downloading GitHub repo zellerlab/SIMBA@HEAD
Error in utils::download.file(url, path, method = method, quiet = quiet,  : 
  cannot open URL 'https://api.github.com/repos/zellerlab/SIMBA/tarball/HEAD'

Then I tried to run the commands again and then I got this error:

Error: Failed to install 'unknown package' from GitHub:
  JSON: EXPECTED value GOT EOF

Is there another way to install your package?