TypeError: missing positional arguments

Hi,

I am really unsure whether this has something with the code or rather the library itself. However, I am really unsure how to fix it and ran across this on various platforms. Perhaps somebody else ran across this error. It occurs after a few iterations of training or prediction which is a little surprising to me. Initially it runs fine but interrupts after a while.

In any case thanks for the starter code @radekosmulski - would have loved to make this my first kaggle entry.

Thanks, Ben

TypeError                                 Traceback (most recent call last)
<ipython-input-20-390c4543c0c9> in <module>()
----> 1 learn.fit_one_cycle(2)

~/.anaconda3/lib/python3.7/site-packages/fastai/train.py in fit_one_cycle(learn, cyc_len, max_lr, moms, div_factor, pct_start, wd, callbacks, **kwargs)
     18     callbacks.append(OneCycleScheduler(learn, max_lr, moms=moms, div_factor=div_factor,
     19                                         pct_start=pct_start, **kwargs))
---> 20     learn.fit(cyc_len, max_lr, wd=wd, callbacks=callbacks)
     21 
     22 def lr_find(learn:Learner, start_lr:Floats=1e-7, end_lr:Floats=10, num_it:int=100, stop_div:bool=True, **kwargs:Any):

~/.anaconda3/lib/python3.7/site-packages/fastai/basic_train.py in fit(self, epochs, lr, wd, callbacks)
    160         callbacks = [cb(self) for cb in self.callback_fns] + listify(callbacks)
    161         fit(epochs, self.model, self.loss_func, opt=self.opt, data=self.data, metrics=self.metrics,
--> 162             callbacks=self.callbacks+callbacks)
    163 
    164     def create_opt(self, lr:Floats, wd:Floats=0.)->None:

~/.anaconda3/lib/python3.7/site-packages/fastai/basic_train.py in fit(epochs, model, loss_func, opt, data, callbacks, metrics)
     92     except Exception as e:
     93         exception = e
---> 94         raise e
     95     finally: cb_handler.on_train_end(exception)
     96 

~/.anaconda3/lib/python3.7/site-packages/fastai/basic_train.py in fit(epochs, model, loss_func, opt, data, callbacks, metrics)
     80             cb_handler.on_epoch_begin()
     81 
---> 82             for xb,yb in progress_bar(data.train_dl, parent=pbar):
     83                 xb, yb = cb_handler.on_batch_begin(xb, yb)
     84                 loss = loss_batch(model, xb, yb, loss_func, opt, cb_handler)

~/.anaconda3/lib/python3.7/site-packages/fastprogress/fastprogress.py in __iter__(self)
     63         self.update(0)
     64         try:
---> 65             for i,o in enumerate(self._gen):
     66                 yield o
     67                 if self.auto_update: self.update(i+1)

~/.anaconda3/lib/python3.7/site-packages/fastai/basic_data.py in __iter__(self)
     45     def __iter__(self):
     46         "Process and returns items from `DataLoader`."
---> 47         for b in self.dl:
     48             y = b[1][0] if is_listy(b[1]) else b[1]
     49             if not self.skip_size1 or y.size(0) != 1: yield self.proc_batch(b)

~/.anaconda3/lib/python3.7/site-packages/torch/utils/data/dataloader.py in __next__(self)
    635                 self.reorder_dict[idx] = batch
    636                 continue
--> 637             return self._process_next_batch(batch)
    638 
    639     next = __next__  # Python 2 compatibility

~/.anaconda3/lib/python3.7/site-packages/torch/utils/data/dataloader.py in _process_next_batch(self, batch)
    656         self._put_indices()
    657         if isinstance(batch, ExceptionWrapper):
--> 658             raise batch.exc_type(batch.exc_msg)
    659         return batch
    660 

TypeError: __init__() missing 2 required positional arguments: 'doc' and 'pos'

radekosmulski / quickdraw

TypeError: missing positional arguments #5