Cannot install prophet

Warning in install.packages :
package ‘https://cran.r-project.org/bin/windows/contrib/3.5/prophet_0.3.0.1.zip’ is not available (for R version 3.4.1)

You should be able to compile it from the source. I assume you're using windows (since it says windows in your path), in which case you'll need Rtools.

See guide here: https://stat.ethz.ch/~dettling/compfromsource.pdf

The thread below might also contain some useful pointers:

got the solution :

install.packages("prophet", repos = "http://cran.r-project.org")