'Could not connect to Uipath Robot Service' after Uipath upgrade

I recently upgraded Uipath(Community Edition) on my desktop from 18.3 to 18.4. Now I have two versions of Uipath installed on my machine. When I run my Uipath code I am getting error: ‘Could not connect to Uipath Robot Service’. Although the robot service is running.
robot%20error

Hi @shrutika

This is often a sign that you services were not properly restarted. Please restart your machine and all should be fine.