i downloaded and installed the rtools and did the necessary process but i have still problem, which is
Sys.which("make")
make
""
when i try to install
install.packages("jsonlite", type = "source")
i got something like that
but when i try to install devtools it seems workd, all the photos are in this printscreen links
its working? i guess or i dont know what should i do i did r4 is writable. and dont know what to do next
there is all the screenshots https://prnt.sc/1033p3j and https://prnt.sc/1033pva