## lesson4 IMDB

Hello, in the leaner.fit

learner.fit(3e-3, 1, wds=1e-6, cycle_len=20, cycle_save_name=‘adam3_20’)

I am getting the followin error:

A Jupyter Widget

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AttributeError Traceback (most recent call last)

in ()

----> 1 learner.fit(3e-3, 1, wds=1e-6, cycle_len=20, cycle_save_name=‘adam3_20’)

~/workspace/fastai/courses/dl1/fastai/learner.py in fit(self, lrs, n_cycle, wds, **kwargs)

190 self.sched = None

191 layer_opt = self.get_layer_opt(lrs, wds)

–> 192 self.fit_gen(self.model, self.data, layer_opt, n_cycle, **kwargs)

193

194 def lr_find(self, start_lr=1e-5, end_lr=10, wds=None):

~/workspace/fastai/courses/dl1/fastai/learner.py in fit_gen(self, model, data, layer_opt, n_cycle, cycle_len, cycle_mult, cycle_save_name, metrics, callbacks, use_wd_sched, **kwargs)

137 n_epoch = sum_geom(cycle_len if cycle_len else 1, cycle_mult, n_cycle)

138 fit(model, data, n_epoch, layer_opt.opt, self.crit,

–> 139 metrics=metrics, callbacks=callbacks, reg_fn=self.reg_fn, clip=self.clip, **kwargs)

140

141 def get_layer_groups(self): return self.models.get_layer_groups()

~/workspace/fastai/courses/dl1/fastai/model.py in fit(model, data, epochs, opt, crit, metrics, callbacks, **kwargs)

82 for (*x,y) in t:

83 batch_num += 1

—> 84 for cb in callbacks: cb.on_batch_begin()

85 loss = stepper.step(V(x),V(y))

86 avg_loss = avg_loss * avg_mom + loss * (1-avg_mom)

AttributeError: ‘CosAnneal’ object has no attribute ‘on_batch_begin’