Error in R script ex-sync.R

[Hugo2121]

I am running the sync example code but got the following error:

if (child.stderr) throw child.stderr;
^
Error in R script ex-sync.R
'unable to install packages'

How to fix it

[Hugo2121]

example.js and ex-sync.R are in same folder

[codeofsumit]

same error for me 🤔