title: 'pandas.core' has no attribute 'index'
body: <p>I want to use qgrid to test a machine learning model interactively. However when loading my dataframe into qgrid I have an error with the dataframe I'm loading:</p>
  
  <pre><code>import qgrid
  import pandas
  
  # Import a CSV file and display it as a Qgrid widget
  df_test = pd.read_csv('out.csv', engine='python', encoding='utf-8')
  qgrid_df = qgrid.show_grid(df_test)
  qgrid_df
  </code></pre>
  
  <p>Indeed, it returns:</p>
  
  <pre><code>'pandas.core' has no attribute 'index'
  </code></pre>
  
  <p>Do you know how I can handle this issue?</p>