jupyter_http_over_ws | Jupyter server extension allows running Jupyter notebooks | Proxy library

I am using jupyter notebook with google colab, on Ubuntu 20.04LTS with Python 3.8.5.

Problems I face are:

1. connection drops suddenly. I mean, to say, colab never executes a cell, instead it just keeps waiting. By waiting, I mean, the cell I run always looks like this and never turns into this: . But, colab does say that I am connected to an instance: .
2. everytime I write something and wait for autocomplete to show suggestions, I receive a TypeError that says, there was unexpected keyword argument 'column'. Here's the complete error message right from the launch of jupyter:

I am trying to connect a jupyter notebook on Google colab to a runtime on GCP EC2 instance. I followed this colab doc instructions Link

Steps taken:

• Set up a Jupyter server on my local

pip install jupyter_http_over_ws && jupyter serverextension enable --py jupyter_http_over_ws

jupyter notebook \ --NotebookApp.allow_origin='https://colab.research.google.com' \ --port=8888 \ --NotebookApp.port_retries=0

• Create and start a EC2 instance on GCP
• SSH into EC2 instance and forward local port using:

gcloud beta compute ssh --zone "europe-west2-c" "" --project "" -- -L 8888:localhost:8888

Error Message from trying to forward the port: