error in installation

[14mprb]

I have followed the steps decribed here:
https://richpauloo.github.io/2018-05-16-Installing-the-R-kernel-in-Jupyter-Lab/

when I get to this step (ran through anaconda prompt as admin in R):
devtools::install_github("IRkernel/IRkernel")

I get:

Downloading GitHub repo IRkernel/IRkernel@master
Error: Git does not seem to be installed on your system.
In addition: Warning messages:
1: In untar2(tarfile, files, list, exdir) :
skipping pax global extended headers
2: In untar2(tarfile, files, list, exdir) :
skipping pax global extended headers

help me please, what do I need to do?

[14mprb]

And when I try to run R code through Jupyter lab I get this message:

Error in contrib.url(repos, "source"): trying to use CRAN without setting a mirror
Traceback:

1. install.packages("prophet")
2. contrib.url(repos, "source")
3. stop("trying to use CRAN without setting a mirror")

[flying-sheep]

Error: Git does not seem to be installed on your system.

well, if you want to do that then you first need to install git.

trying to use CRAN without setting a mirror

that has been fixed 2 years ago: #339. do you have a years-old version of IRkernel installed?

[ghost]

Thanks everyone,I have same error,I install githttps://git-scm.com/downloads,all is OK.But all guides do not tell our to install GIT.

[flying-sheep]

yeah, you’re right. we should probably fix that, but then again, the error message is very clear

[14mprb]

That fixed the issue for me! thanks