title: AttributeError: 'tuple' object has no attribute 'log_softmax'
body: <p>while trying to finetune inception_V3 for my own dataset by changing the last fc layer like </p>
  
  <pre><code>last_layer =nn.Linear(n_inputs, len(classes))
  inception_v3.fc = last_layer
  </code></pre>
  
  <p>after that when I train it got this error on this position</p>
  
  <pre><code>    # on training loop
      output = inception_v3(data)
      # calculate the batch loss
      loss = criterion(output, target)
  </code></pre>
  
  <p>Error is </p>
  
  <pre><code> AttributeError: 'tuple' object has no attribute 'log_softmax'
  </code></pre>