title: R: How to solve Error in is.data.frame(x):object ' ' not found?
body: <p>I tried to save my tweets into .csv, but I faced this error message:</p>
  
  <pre><code>lina=twListToDF(maulina)
  Called from: twListToDF(maulina)
  write.csv(lina,file='D:/maulina.csv',row.names=F)
  Error in is.data.frame(x) : object 'lina' not found
  </code></pre>
  
  <p>What should I do to solve it?</p>