title: Is something wrong with the ggmap and mapview packages in R?
body: <p>This past summer I was working on a code in R where I used the packages <code>mapview</code> and <code>ggmap</code>. During the summer the code was working fine. This past week I ran the code without any changes and I get the following message when I use <code>mapview</code>:</p>
  
  <pre><code>mapview(as(tr10, "Spatial"), zcol = "utc_timestamp", lwd = 5,
        legend = TRUE)
  Error in htmlwidgets::sizingPolicy(defaultWidth = defaultWidth, defaultHeight = defaultHeight,  : 
  unused argument (browser.external = FALSE)
  </code></pre>
  
  <p>I did not made any changes to my code and I upgrade the package just in case but still does not work. And with <code>ggmap</code> I get the following:</p>
  
  <pre><code>puerto_rico &lt;- get_map(location = c(lon = mean(long), lat = mean(lat)), 
                       maptype = "terrain", source = "google",
                       zoom = 12)
  Error in download.file(url, destfile = tmp, quiet = !messaging, mode = "wb") : 
  cannot open URL 'http://maps.googleapis.com/maps/api/staticmap?center=18.2,-67.1&amp;zoom=12&amp;size=640x640&amp;scale=2&amp;maptype=terrain&amp;language=en-EN&amp;sensor=false'
  In addition: Warning message:
  In download.file(url, destfile = tmp, quiet = !messaging, mode = "wb") :
  
  cannot open URL 'http://maps.googleapis.com/maps/api/staticmap?center=18.2,-67.1&amp;zoom=12&amp;size=640x640&amp;scale=2&amp;maptype=terrain&amp;language=en-EN&amp;sensor=false': HTTP status was '403 Forbidden'
  </code></pre>
  
  <p>Can someone explain what is happening with these packages and what other alternatives do I have for me to access the use of maps for my plots? </p>