Tensorflow installation not found in R

I am attempting to install tensorflow on R-Studio in Windows 10. I have tried multiple different installation methods (from CRAN, from source, from Conda, from pip)

Each time, I am told that it installs successfully, but when I try to run the following Hello World command, I get an error (see attached image).

library(tensorflow)
tf$constant("Hello World")

https://imgur.com/hYfs4D3

Things I have tried:

• tensorflow: [NOT FOUND] error in RStudio

• Error: Installation of TensorFlow not found