title: R: object ‘set_global_graph_attrs’ is not exported from 'namespace:DiagrammeR'
body: <p>I wanted to install <code>Mxnet library</code> and found on this forum the topic where was described how do it .</p>
  
  <pre><code>  cran &lt;- getOption("repos")
      cran["dmlc"] &lt;- "https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/"
      options(repos = cran)
      install.packages("mxnet")
      library("mxnet")
  </code></pre>
  
  <p>and then i got the error </p>
  
  <pre><code>Error: package or namespace load failed for ‘mxnet’:
   object ‘set_global_graph_attrs’ is not exported from 'namespace:DiagrammeR'
  </code></pre>
  
  <p>what's wrong?
  <code>DiagrammeR library</code> is installed.</p>