Cannot Connect to Kernel issue

As i found the solution is to downgrade the tornado pip to 5.1.1 . Either using
pip install tornado==5.1.1 command or the screen shot method . But I cannot access the Mark to install the version as shown in screenshot. when I run the command

C:\Users\AYUSH>pip install tornado==5.1.1
Requirement already satisfied: tornado==5.1.1 in e:\anaconda3\lib\site-packages (5.1.1)

but still it shows cannot connect to kernel in Jupyter notebook. Please Help me i am stuck at this

Start by reproducing the kernel connection failure in Jupyter Notebook with the reported Anaconda environment and installed Tornado version. Determine whether the failure is caused by the environment or by Jupyter Notebook, and document a reproducible cause and resolution.

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