Lesson 1 - IOPub message rate exceeded

When running this code in the lesson:
from fastai.text.all import *

dls = TextDataLoaders.from_folder(untar_data(URLs.IMDB), valid='test',bs=16)
learn = text_classifier_learner(dls, AWD_LSTM, drop_mult=0.5, metrics=accuracy)
learn.fine_tune(4, 1e-2)

I’m getting valid output (though somewhat slowly~27 minutes per epoch, as opposed to 3 minutes for Jeremy Howard), but after that, I’m getting the following message:
IOPub message rate exceeded.
The notebook server will temporarily stop sending output
to the client in order to avoid crashing it.
To change this limit, set the config variable
--NotebookApp.iopub_msg_rate_limit.

Current values:
NotebookApp.iopub_msg_rate_limit=1000.0 (msgs/sec)
NotebookApp.rate_limit_window=3.0 (secs)

Is this something I should do something about, or think about?