title: importing csv to sqlite(firefox add-on) +TypeError: gFile.contents is null
body: <p>I'm trying to import a .csv file into sqlite database (firefox add-on). </p>
  
  <p>It has approximately 26,000 rows with 4 columns. Each time it gives this error:</p>
  
  <blockquote>
    <p>CSV Worker error! TypeError: gFile.contents is null File name: chrome://sqlitemanager/content/workerCsv.js Line number: 52</p>
  </blockquote>
  
  <p>I already tried by splitting the csv file as well.</p>
  
  <p><img src="https://i.stack.imgur.com/q4DGS.png" alt="enter image description here"></p>