title: Why is R telling me that Rtools 4.0 is an incompatible version?
body: <p>I want to code in R language using RStudio. I'm using RStudio latest version:1.4.1106 and Rtools version: 4.0. But I have an error</p>
  <p>&quot;WARNING: Rtools is required to build R packages but no version of Rtools compatible with the currently running version of R was found. Note that the following incompatible version(s) of Rtools were found:</p>
  <ul>
  <li>Rtools 4.0 (installed at C:\rtools40)</li>
  </ul>
  <p>Please download and install the appropriate version of Rtools before proceeding:</p>
  <p><a href="https://cran.rstudio.com/bin/windows/Rtools/%22" rel="nofollow noreferrer">https://cran.rstudio.com/bin/windows/Rtools/&quot;</a></p>
  <p>But now I'm using RStudio latest version is 1.4.1106. What should I do to fix that error</p>