Package instalations for CHIRPs rainfall data Downloading

[machaielder]

Hello everyone! Can you help me, please
I am trying to download CHRIPS rainfall data using R but am getting an error.

The error comes when I try to install the necessary packages to run the script in r.
I get no problem when I install devtools [install.packages("devtools")]; library(devtools)

the problem appears
When I enter install_github("environmentalinformatics-marburg/heavyRain") I get the following error:
could not open URL 'https://api.github.com/repos/environmentalinformatics-marburg/heavyRain/tarball/master'

Can anyone help me with this?
Thank you in advance

[technocrat]

devtools::install_github("environmentalinformatics-marburg/heavyRain") 

just worked for me on Mojave.

Check to see if you can connect to the site via browser: https://github.com/environmentalinformatics-marburg/heavyRain