JupyterHub on Ubuntu: Terminal showing blank screen

I started the jupyterhub and logged in with user when I launch the terminal its just blank screen

jayanth@ubuntu-machine:~$ jupyter --version
Selected Jupyter core packages…
IPython : 7.31.1
ipykernel : 6.7.0
ipywidgets : 6.0.0
jupyter_client : 8.2.0
jupyter_core : 5.3.0
jupyter_server : 2.5.0
jupyterlab : 3.6.3
nbclient : 0.5.6
nbconvert : 7.3.1
nbformat : 5.8.0
notebook : 6.4.8
qtconsole : not installed