All these options applied simultaneously worked, so thanks a ton. I was much relieved.
As per the instructions in my course I was supposed to install a few packages and run the course instructions. An rmd file was to be knitted, but I'm unable to find the knit option in my RStudio!
Few options said to convert the txt file to html, but that isn't working either.
split from Unable to run devtool, dplyr, gitthub, Rtools in R 4.0.2