Update fast-ai

[jorgerodpen]

I was trying to use the AR-Net for one of my project when I came up with the following error:

`ValueError Traceback (most recent call last)
in
----> 1 m.fit(deltas)

~/opt/anaconda3/lib/python3.8/site-packages/arnet/ar_net.py in fit(self, series, plot)
217 self.make_datasets(series)
218 self.create_learner()
--> 219 self.fit_one_cycle(plot=plot)
220 return self
221

~/opt/anaconda3/lib/python3.8/site-packages/arnet/ar_net.py in fit_one_cycle(self, n_epoch, lr, cycles, plot)
201
202 if lr is None:
--> 203 self.find_lr(plot=plot)
204 lr = self.lr
205 for i in range(0, cycles):

~/opt/anaconda3/lib/python3.8/site-packages/arnet/ar_net.py in find_lr(self, plot)
187 if self.learn is None:
188 raise ValueError("create learner first.")
--> 189 lr_at_min, lr_steep = self.learn.lr_find(start_lr=1e-6, end_lr=10, num_it=300, show_plot=plot)
190 if plot:
191 plt.show()

ValueError: not enough values to unpack (expected 2, got 1)`

Apparently the Fast-AI functionality was changed: https://forums.fast.ai/t/error-in-lr-find/89968

So the code requires a small update so that the AR-Net can work.

[Rahul664]

What's the solution for this issue? Or how to correct it. I am facing this same issue.