Was the notebook created on a Windows machine by pasiting Markdown (or fragments of it) in a Chrome browser? If that is the case it might be that there are wrong line endings in the notebook code due to a bug which was already fixed.
Was the notebook created on a Windows machine by pasiting Markdown (or fragments of it) in a Chrome browser? If that is the case it might be that there are wrong line endings in the notebook code due to a bug which was already fixed.