title: Error in if (is.waive(data) || empty(data)) return(cbind(data, PANEL = integer(0))) : # missing value where TRUE/FALSE needed
body: <p>I've this data frame of a facebook page:</p>
  
  <p><a href="https://i.stack.imgur.com/qqCe7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qqCe7.png" alt="enter image description here"></a></p>
  
  <p>I run this code</p>
  
  <pre><code>ggplot(week, aes(x = week, y = likes)) + geom_col(fill = "cadetblue3", size =1, width = 0.5) + ggtitle('week Total Likes') + theme(plot.title = element_text(size = , face = "bold")) + theme_bw() + geom_text(aes(label = likes))
  </code></pre>
  
  <p>and it runs correctly</p>
  
  <p>but when I knit Rmarkdown to html or pdf,, </p>
  
  <p><a href="https://i.stack.imgur.com/9jAgM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9jAgM.png" alt="R gives me this ERROR"></a></p>
  
  <p>where's the problem?</p>