stream.write does not print in the watcher file

[vaapopescu]

My watcher does not print anything into the log file.

watcher = tensorwatch.Watcher(filename='tensorwatch.log', port=5)

stream = watcher.create_stream(name='loss', **kwargs)
watcher.make_notebook()

//during training
stream.write((epoch, loss))

The tensorwatch.log is created, but it is always empty, so when I try to plot in Jupyter Notebook it does not show anything.