title: R package DT cannot be installed
body: <p>In order to use the following command in RStudio</p>
  <pre><code>DT::datatable(Result, rownames = FALSE)
  </code></pre>
  <p>the package DT needs to be installed. Without it the following error occurs:</p>
  <pre><code>Error in loadNameSpace(name) : there is no package called 'DT'
  Calls: &lt;Anonymous&gt; ... tryCatch -&gt; tryCatchList -&gt; tryCatchOne -&gt; &lt;Anonymous&gt;
  </code></pre>
  <p>But when calling</p>
  <pre><code>install.packages(&quot;DT&quot;)
  </code></pre>
  <p>the following happens:</p>
  <pre><code>Installing package into ‘\\path/to/Documents/R/win-library/3.5’
      (as ‘lib’ is unspecified)
      also installing the dependency ‘htmlwidgets’
      
  
   There are binary versions available but the source versions are later:
              binary source needs_compilation htmlwidgets  1.5.1  1.5.3             FALSE DT            0.13   0.16             FALSE
  
  installing the source packages ‘htmlwidgets’, ‘DT’
  
  trying URL 'https://cran.rstudio.com/src/contrib/htmlwidgets_1.5.3.tar.gz' Content type 'application/x-gzip' length 323656 bytes (316 KB) downloaded 316 KB
  
  trying URL 'https://cran.rstudio.com/src/contrib/DT_0.16.tar.gz' Content type 'application/x-gzip' length 1511725 bytes (1.4 MB) downloaded 1.4 MB
  
  &quot;\\path\to\Documents&quot; CMD.EXE wurde mit dem oben angegebenen Pfad als aktuellem Verzeichnis gestartet. UNC-Pfade werden nicht untersttzt. Stattdessen wird das Windows-Verzeichnis als aktuelles Verzeichnis gesetzt.
  * installing *source* package 'htmlwidgets' ...
  ** Paket 'htmlwidgets' successfully unpacked and MD5 sum checked
  ** R
  ** inst
  ** byte-compile and prepare package for lazy loading Failed with error:  'there is no package called 'shiny''
  ** help
  *** installing help indices   converting help for package 'htmlwidgets'
      finding HTML links ... fertig
      JS                                      html  
      JSEvals                                 html  
      createWidget                            html   Rd warning: C:/path/to/AppData/Local/Temp/RtmpoJp2TH/R.INSTALL1e04c257a23/htmlwidgets/man/createWidget.Rd:25: file link 'toJSON' in package 'jsonlite' does not exist and so has been treated as a topic
      getDependency                           html  
      htmlwidgets-package                     html  
      htmlwidgets-shiny                       html  
      onRender                                html  
      onStaticRenderComplete                  html   Rd warning: C:/path/to/AppData/Local/Temp/RtmpoJp2TH/R.INSTALL1e04c257a23/htmlwidgets/man/onStaticRenderComplete.Rd:15: file link 'tags' in package 'htmltools' does not exist and so has been treated as a topic
      prependContent                          html   Rd warning: C:path/to/AppData/Local/Temp/RtmpoJp2TH/R.INSTALL1e04c257a23/htmlwidgets/man/prependContent.Rd:15: file link 'tags' in package 'htmltools' does not exist and so has been treated as a topic
      saveWidget                              html  
      scaffoldWidget                          html  
      setWidgetIdSeed                         html  
      sizingPolicy                            html  
  ** building package indices
  ** installing vignettes Warning in file(con, &quot;w&quot;)   cannot open file '\\path/to/Documents/R/win-library/3.5/htmlwidgets/doc/index.html' : No such file or directory Error in file(con, &quot;w&quot;) : connot open connection ERROR: installing vignettes failed
  * removing '\\path/to/Documents/R/win-library/3.5/htmlwidgets' In R CMD INSTALL Warning in install.packages :   installation of package ‘htmlwidgets’ had non-zero exit status &quot;\\path\to\Documents&quot; CMD.EXE has been started with stated path from current directory. UNC-paths not supported. Instead Windows directory is set as current directory. ERROR: dependency 'htmlwidgets' is not available for package 'DT'
  * removing '\\path/to/Documents/R/win-library/3.5/DT' In R CMD INSTALL Warning in install.packages :   installation of package ‘DT’ had non-zero exit status
  
  The downloaded source packages are in   ‘C:\path\to\AppData\Local\Temp\RtmpYJTyyw\downloaded_packages’
  </code></pre>
  <p>Can you give me a clue about what is wrong and how it can be fixed?</p>