That indicates that the Jupyter widgets extension is not installed. Assuming your server is running jlab 3, it can be installed by installing ipywidgets 7.6+ or by installing jupyterlab_widgets 1.0+.
That indicates that the Jupyter widgets extension is not installed. Assuming your server is running jlab 3, it can be installed by installing ipywidgets 7.6+ or by installing jupyterlab_widgets 1.0+.