Approximetal

> There is no easy way to save plots. You would have to dive into [`pyannote.core` code](https://github.com/pyannote/pyannote-core/blob/13a43c2cd3a297591cbaac4625920479cdcebe6a/pyannote/core/notebook.py#L300). > > Saving `Annotation` instances to RTTM file can be done with [`Annotation.write_rttm`](http://pyannote.github.io/pyannote-core/reference.html?highlight=write_rttm#pyannote.core.Annotation.write_rttm)...

I have the same issue, it only appears on Linux and Mac, but works well on Windows.